Resistance Box 0-5000 Ohms plug type fitted England wire wound coils accurate quality philip Harris type sup
Resonance tube apparatus all metallic plastic graduated tube plastic reservoir sliding in brass rod special, export quality.
Rheostat sliding resistance oc percelain pipe English type special grip jockey 0-300 ohm 0.8 amp pak assembled export quality 20cm 2 ½ “
Rheostat sliding resistance oc percelain pipe English type special grip jockey 0-1750 ohm 0.3 amp Pak assembled export quality
Rheostat sliding resistance on heavy percelain pipe English type special grip jockey 0-600 ohm 0.3 amp pak assembled export quality large size 6”
Ripple tank apparatus fitted with small motor and power supply for 220 volts sup. Quality
Searle’s apparatus for Young's Modulus with 2 ½ Kg iron slotted weight complete set.
Semi conductor diode apparatus complete large box fitted with three DC large size China meters sup. Quality
Slide wire bridge red wood base, nickled strips brass terminals with jockey.
Sodium lamp35 watt bulb with choke in box for 220 volt complete
Sonometer full meter long Red wood box with brass pulleys w/o weights with etc. superior
Spectrometer 360 x 0.1 degree students English type sup quality. S.S.
Travelling microscope large size horizontal 230 mm vertical 180 mm with vernier japan type sup. Qty
Tuning forks (different frequencies) best quality blued steel original Sheffield
Voltmeter (0 – 3/0-15 Volt) best quality bench type dual range
Variation of current with intensity of light by using photocell apparatus in large wooden box Pak with DC moving coil bench tyoe 0-200 U
Physics Items II
MECHANICS SCREW GAUGE Moore & Wright type. Circular brass body stainless steel screw & pivot, ratchet stop 15×1/100mm 15×1/200mm 20×1/100mm 20×1/200mm 225×1/100mm 25×1/200mm 360.00 378.00 each (b) Screw Gauge. Imported. Superior quality. 25mm. Least count 0.01 (c) Screw Gauge. DIGITAL. imported. Superior quality. 25mm. Least Count 0.01mm
VERNIER CALIPER. ". Regular Quality. chromium plated. Vernier reading to 0.01 CMS. with wheel drive. (b) Stainless steel. Superior Quality. 5'' size, Vernier reading to 0.01cms. With wheel drive (c) I.M.E. Type. Steel chromium plated, double scale. Size 6'', Vernier reading to 0.01cms. (d) Vernier Caliper. Imported Size 6.' (e) Vernier Caliper. DIGITAL. Imported Size 6.''
SPHEROMETER. . Brass body, stainless steel screw & legs (a) 1/100 m. Distance between the legs is 23mm. (b) 1/200 m. Distance between the legs is 23mm.(c) Pye Type, double disc 1/100mm. 3(d) Pye Type, double disc 1/200mm
METER SCALE. Wooden. Superior Quality. Both sides CMS. (b) Meter Scale. Stainless Steel. 8 (c) HALF METER SCALE. Wooden. Superior Quality. Both sides CMS. (d) Half Meter Scale. Stainless steel.
BOYLE'S LAW APPARATUS. ". Metal base. with leveling screws without mercury.
YOUNG'S MODULUS APPRATUS. SEARLE'S PATTERN.
Price without weight set (a) Iron body. (b) Brass body, chromium plated (c) Iron slotted weights for above. Set of 9 weights & 1 hanger, 500gms each. Total weight 5 kg. (d) Young's Modulus Apparatus. VERNIER TYPE. With wall bracket but without weight set.
YOUNG'S MODULUS OF ROD. SEARLE'S. "Interference Fringes Method". Price without weights.
YOUNG'S MODULUS & POISSON RATIO OF GLASS APPARATUS.
" Cronus Method". Complete with macroscope, glass beam, perplex beam & weight set but without sodium vapor lamp assembly. "" Screw Gauge "
" Vernier Calipers " Spherometer Boyle’s Law Apparatus "" Young's Modules Young Modules Vernier
SEARLE'S RIGIDITY APPARATUS FOR FINDING Y & N. " Brass bars. chromium plated. (b) Stand for Searle's Rigidity Apparatus.
RIGIDITY MODULUS DYNAMICAL METHOD.
"Steel rod 16" long & 1" in diameter. With wall bracket.
TORSION APPARATUS. Vertical Pattern. 100cms long, with 3 scales. Price without weight set. (b) Horizontal Pattern. 50cms long, with 2 scales. Price without weight set. (c) Pattern. 100cms long, with 3 scales. Price without weight set
CANTILEVER. with G clamp.
BENDING OF BEAM APPARATUS. With knife edges, test bar, spherometer & hanger but without weights.
KOING'S APPARATUS FOR BENDING OF BEAM. With knife edges, test bar, optical lever & hanger but without weights
POISSION'S RATIO OF RUBBER APPARATUS. Price without weight set.
MAXWELL'S VIBRATION NEDDLE. 40cm long & 18mm in diameter, graduated Brass tube, with wall bracket (b) Stand for Maxwell's Vibration Needle.
INERTIA BAR.30cms long & 2cms diameter. With wall bracket.
INERTIA DISC. Brass disc of 15cms in diameter & 6mm thick, with wall bracket.
TORSION PENDULUM. 25cms in diameter. With wall bracket.
INERTIA TABLE. 15cms diameter. Steel C.P. rod, with stand.
FLY WHEEL. Wheel diameter 20cms (8"), without revolution counter & without weight s(b) -do-same as above but with revolution counter.
HOOK'S LAW APPARATUS. On metal stand. With mirror, scale & weights.
FLAT SPIRAL SPRING. Spherometer Type. On stand. Price without stop watch.
SPRING CONSTANT APPARATUS. "Price without weight set & without stop watch.
SIMPLE PENDULUM. " Iron chromium plated ball 5cms in diameter, with steel knife support & bracket. "" Torsion Apparatus" Bending & Beam Apparatus Maxwell Needle Fly
KATER'S PENDULUM. With 2 sets of large & small weights, two knife edges and wall bracket. (a) Iron chromium plated bar, 100cms long &12mm in diameter, with iron chromium plated weights. (b) Brass chromium plated bar, 100cms long &12mm in diameter, with brass weights. (c) Stainless steel bar, 100cms long &12mm in diameter, with brass weights. 6120.00 each (d) Stand for Kater's Pendulum. Tall tripod form.
BAR PENDULUM. 100cms long. With wall bracket & knife edges (a) Rectangular iron strip - powder coated, with holes at every 5cms. (b) Rectangular Brass strip - chromium plated, with holes at every 5cms. (c) Stainless steel circular bar, with marks at every 5cms. (d) stand for Bar Pendulum. Tall tripod form.
BIFILAR PENDULUM. On stand.
COUPLED PENDULUMN. On stand. With light source, screen (graph), weight set & digital stop watch.
FRICTION APPARATUS. With 3 separate wooden trays having different contact surface
PARALLELOGRAM LAW OF FORCES APPARATUS. Complete with brass C.P. slotted (b --do-- But instead of brass weights, Iron nickel plated weight sets are supplied.
SURFACE TENSION BALANCE. SEARLES'S
SURFACE TENSION APPARATUS. DENOUY'S For surface tension of liquids. 19800.00
JAEGER'S APPARATUS. "BM" Price without travelling microscope & rubber tube etc.
SURFACE TENSION BY RIPPLES. (Rayleigh Method). battery eliminator/power supply.
QUINCKE'S APPARATUS FOR DETERMINATION OF SURFACE TENSION OF MERCURY. (a) Price without mercury & travelling microscope. (b) Mercury- double distilled. (c) Travelling microscope.
SURFACE TENSION BY CAPILLARY RISE METHOD. "BM" With slow motion stand, capillary attachment & travelling microscope. 12240.00 each "BM 027" Bar Pendulam "BM 030" Inclined Plane Tension Balance " 032" Parallelogram 035" J
VISCOSITY APPARATUS. "Ponselle’s Method" (Manometer Type). With constant level tank.
RANKIN'S APPARATUS FOR DETERMINATION OF VISCOSITY OF GASES
FORTIN'S BAROMETER With mercury & outer wooden case. Mercury to be filled by customer on their own.
ANEROID BAROMETER Dial diameter 10cms.
NICHOLSON'S HYDROMETER. Brass nickel plated. to carry10gms to 15gms weight. (b) Glass jar for above 30cms long & 10cms in diameter.
HOT & COLD AIR BLOWER. Workable on 220V A.C.
SPECIFIC GRAVITY BOTTLE. Borosil Glass. With capillary stopper. Capacity 25cc 50cc 100cc M
SLOTTED WEIGHTS 7 HANGERS. Set of 4 weight & hanger. each Brass C.P. Weights (a) 20 gms (Total weight 100 gms) (b) 50 gms (Total weight 250 gms) (c) 100 gms (Total weight 500 gms) (d) 250 gms (Total weight 1.25 kg) ------ (e) 500 gms (Total weight 2.5 kg) ------- (f) 1000gms (Total weight 1.25 kg) ------ Iron C.P. Weights Painted Iron Weights - set
STOP CLOCK. Smith type. metal body. With start, stop & fly back action. each (b) -do- Digital Model. Least Count 1 second. " Viscos in App. "BM 042" Viscometer Searles Pattern "Nicholson's Hydrometer "B Fortin Barometer
050" Slotted Weight
" Stop Clock 04 (b) Racer mechanical. 1/10th of a second accuracy. Single button. With start, stop & fly back action. (c) RUSSIAN MECHANICAL. 1/10th of second accuracy. Single button. With start, stop & fly back action.
ATWOOD'S MACHINE. "BM" Brass Pipe. 180cms.
ROTARY HIGH VACUUM PUMP. With motor. Displacement (lit./minute) 25 50 75 100 150 (a) Single stage 21600.00 25560.00 30600 30600.00 37800.00 43200.00 each (b) Double stage 27000.00 33480.00 36000.00 45000.00 52200.00 HEAT
LINEAR EXPANSION APPARATUS. Price without hot plate, boiler, thermometer etc. (a) 50cms long brass C.P. tube, with spherometer. 1980.00 each (b) 100cms long brass C.P. tube. with spherometer.
CO-EFFICIENT OF LINEAR EXPANSION APPARATUS. PULLINGER'S VERTICAL. "BM" All metal. (a) 50cms long brass C.P. tube, with optical lever. Price without hot plate, boiler, thermometer etc. (b) 100cms long brass C.P. tube,with optical lever.Price without hot plate, boiler, thermometer etc.
CONSTANT VOLUME AIR THERMOMETER. Glass parts made of Borosil glass.
CONSTANT PRESSURE AIR THERMOMETER. Glass parts made of Borosil glass.
BECKMEN'S DEPRESSION OF FREEZING POINT APPARATUS. Borosil glass. Without thermometer.
BECKMEN'S ELEVATIONOFBOILING POINT APPARATUS.""Borosil glass. Without thermometer.
DULONG & PETIT'S APPARATUS. For coefficient of absolute expansion of mercury.
CLEMENT AND DESORME'S APPARATUS. With pump & manometer.
THERMOCOUPLE. 50cms long, (Price without retort stands to hold the thermocouple). (a) Iron & Copper pair 1260.00 each (b) Copper& Eureka pair
THERMOPILE. ' (Pairs of Antimony & Bismuth). 8pairs 12 pairs 24 pairs 48 pairs 8100.00 each "BM 052" Stop Watch "
055" Liner Expansion 057,58" Constant Volume Pressure Air Thermometer BM" With double
NEWTON'S LAW OF COOLING APPARATUS. Price without thermometer. (a) University Pattern. Brass C.P. 2880.00 each (b) Simple Type. Made of brass sheet. 2160.00 each BM
JOULE'S CALORIMETER. "BM" Single Walled. Calorimeter size 3"×2". (a) Single Walled. Calorimeter size 4"×3"
COPPER CALORIMETER. With outer wooden cover, thermometer holder & stirrer (a) Size 4"×3" 810.00 each (b) Size 6"×4". (c) CALORIMETER. Made of copper BM
SEARLE'S APPARATUS FOR FINDING "J". Hand driven type. With revolution counter. 126 (b) ---do--- but fitted with electric motor (mains operated) & revolution counter.
each
CALLENDER'S REVOLVING DRUM APPARATUS. Fitted with electric motor & revolution counter.
THERMAL CONDUCTIVITY OF RUBBER TUBING. With sample rubber tubing, boiler & thermometer.
THERMALCONDUCTIVITYOFGLASS APPARATUS. “Price without thermometer.
FORBE'S APPARATUS FOR DETERMINATION OF CONDUCTIVITY OF A METAL BAR.
CALLENDAR & BARNE'S APPARATUS. "BM" With constant level tank but without rubber tubing. 2160.00 each (b) Transformer for use with above input 220 VA.C. Output 24VA.C@3A (c) Thermometer - 5 to 50× 1/5th oC (Two pieces required).
STEFAN'S CONSTANT APPARATUS. "BM" Price without thermometer, steam boiler, hot plate etc.(b) Extra Thermocouple for above. Each
BM
SEARLE'S THERMAL CONDUCTIVITY APPARATUS. "With Copper rod 12" long & 1" in diameter. " 066" Newton's Law of Cooling "067" Joules Calorimeter
068" Cooper Calorimeter " 074" Calendar & Barnes App. "076" Lee's& Chariton Same as above but copper rod 12" long & 1½ "in diameter. (c) Thermometer 0-110×½ oC (Two pieces required).(d) Steam generator 2 litres capacity, copper -jointless bottom.
VICTOR MAYER'S APPARATUS. "BM" Glass part only, without outer copper jacket. (b) --do--- with outer jacket made of copper, rest Barosil glass.
STEAM HEATER. Made of Copper, 8cms diameter capacity 1 litre. (B) --do-- 10cms diameter, capacity, 2 litres.
HYPSOMETER. " Made of copper. Size 8". 1(b) --do-- Size 10".
STEAM BOILER. ""JOINTLESS BOTTOM. More of stout copper sheet. capacity 1 liter 2 liters 3 liters 4 liters
HOT PLATE ROUND. "BM" 7th diameter, 1500 watts. With energy regulation control each
MAXIMUM & MINIMUM THERMOMETER. Accurate.
WET & DRY THERMOMETER. "
WALL THERMOMETER. Centigrade & Fahrenheit
THERMOMETERS. Accurately calibrated. Incase. Mercury/alcohol filled. Mercury Filled Ordinary quality (a) 0 to 110×1oC. 105.00 (b) 0 to 110×½oC. 112.00 (c) 0 to 250×2oC. 112.00 (d) 0 to 360×2oC. 112.00 Mercury Filled Superior Quality Alcohol Filled
PRECISION THERMOMETERS. Accurate. In case. Mercury filled. (a) -5 to 50 × 1/5th oC 216.00 each (a) -5 to 50 × 1/10th oC 324.00 each (a) -5 to 100 × 1/5th (a) -5 to 100 × 1/10th oC Thermal Conductivity Searles Apparatus Steam Heater "BM 083" Max & Min Thermometer Wet & Dry Thermometer "Steam Copper " Hot Plate " Thermometer Stainless Steel Scale. (b) Drum Type. Instead of a vernier, a rotating graduated drum with 100 divisions is provided. (c) Extension for use of our travelling microscope for newton's ring experiment.
TRAVELLING MICROSCOPE WITH THREE MOTIONS (X-Y-Z). Stainless steel scale.
SIX POSITION TRAVELLING MICROSCOPE. Stainless steel scale.
TRAVELLING MICROSCOPE. BRIDGE FORM. " (For Newton, s Ring Experiment) Stainless steel scale.
READING TELESCOPE. “Standout without scale & without scale holder. Achromatic objective. (b) ----do--- with scale & scale holder. (c) Deluxe (Ossawa Type). Tilting motion. Very heavy base. With scale & scale holder.
BABINET'S COMPENSATOR. "BM" With quarter waveplate, mounted on a brass disc with graduation.
RESEARCH OPTICAL BENCH. "BM" Fitted with stainless steel scale. 170cms long, with 4 riders having attached vernier, 1 slit, 1 Bi-prism holder & 1 micrometer eye-piece.
OPTICAL BENCH. SINGLE BAR TYPE. METALLIC. With 4 metal riders, 2 lens holders & 2 needles. (a) Working length 100cms (1 meter). 3240.00 each (b) Working length 150cms (1.5 meter).
OPTICAL BENCH. TWO BAR TYPE. METALLIC. With 4 metal riders, 2 lens holders & 2 needles. Steel Rods (a) Working length 100cms (1 meter). (b) Working length 150cms (1.5 meter). Brass Pipes
LUMMER BRODHUM PHOTOMETER. HEAD ONLY - without lamp & without optical bench. (b) --do-- With 1.5m long double bar bench with M.S rods, with riders & two lamps.
POLARIMETER. With Laurent's half shade device. Wiht1glass tube 200mm long. (b) --do--With Bi-guards half shade device. With 1 glass tube 200mm long. (c) Spare Polarimeter Tubes. With bubble in the center.100or200 mm long.
SETUP FOR POLARIZATION BY REFLECTION & VERIFICATION OF BREWSTERS & MALUS LAW.
SEPCTROMETER. "Stainless steel scale. Supplied in a wooden box. (a) Scale 6", vernier reading to 1 minute (b) Scale 6", vernier reading to 30 second (c) Scale 7", vernier reading to 1 minute (d) Scale 7", vernier reading to 30 second 1 (e) Scale 9", vernier reading to 1 minute (f) Scale 9", vernier reading to 30 second (g) Scale 9", vernier reading to 10 or 20 seconds. each (h) Scale 10", vernier reading to 1 minute (i) Scale 10", vernier reading to 10 or 20 seconds. (j) Glass x-line graticule, instead of cross-wire, can be fitted at an extra cost. (k) Micrometer scale fitted to spectrometer eye-piece.
SEPCTROMETER PRISM. Optically worked. Equilateral, two faces polished. Size - 25× 25 mm (a) Borosilicate crown glass. R.I. 1.51 (b) Dens flint glass. R.I. 1.6) Extra dents flint glass. (d) Double extra dens flint glass.32× 32mm 38×3M
HOLLOW GLASS PRISM. Made from solid glass blocks, with side plates. for spectrometer work. (a) 38 × 38× 25mm height. (b) 38 × 38× 38mm height. (c) 50 × 50× 50mm height.
1008.00BM
SETUP TO DETERMINE WAVELENGTH OF COLORS OF WHITE LIGHT USING TRANSMISSION GRATING. Complete with spectrometer, grating, mercury light source etc.
NEWTON'S RING APPARATUS. "BM" Compact type. Complete with microscope, lens set, reflector, condenser etc. but without sodium vapor lamp assembly.
NEWTON'S RING APPARATUS. "BM" Without microscope. (a) Three Screw Type. With metal frame & Newton ring lens set (plate glass). (b) 45o Plate type. With wooden box with 45o glass plate & Newton ring lens set (plate glass).
NEWTON'S RING LENS SET. Set a Plano convex lens & plane glass plate. 100cms or 200cms local length. Diameter 50mm 60mm (a) Made from Crown glass (extra white glass) (b) Made from plate glass (green glass)
SEXTANT STANDARD PATTERN. " All brass. In wooden case (b) Sextant stand. Adjustable in height. Heavy & study clamp
BI-PRISM ASSEMBLY. " With 1.5m long double bar M.S. rod optical bench. Without sodium lamp assly. (a) --do -- but with bench having STAINLESS STEEL rods instead of M.S. rods. (c) Biprism assembly only. (Without bench). With Bi-prism holder, lens holder, micrometer eyepiece & slit.
FRESNEL'S BI-PRISM. Optically worked, made from English crown glass. Size 40 x 32mm 8 (b) --do-- size 50 x 40mm.
NODAL SLIDE ASSEMBLY. With 1.5m long double bar M.S. rod bench. (b) --do -- but with bench having STAINLESS STEEL rods instead of M.S. rods. (c) Nodal slide unit only (Without bench). With nodal slide arrangement, morror lamp house & cross slit.
GONIOMETER. SEARLE'S. For measurement of local length of an optical system. 0107" Prism " 0110" Newton Rings App. 0113" Sextant "0114" Bi-Prism Assembly Prism Fresnel’s 0116" Nodal Slide Assembly
SODIUM VAPOUR LAMP & RELATED ACCESSORIES. 35 watts 55 watts (a) Sodium Vapor Lamp, Imported (b) Leak Transformer for sodium Lamp (c) Wooden Box with Slits on 2 sides. each
MERCURY VAPOUR LAMP. 80 watts or 125 watts. Complete with choke to work on 220 volts A.C. (b) Wooden Box for mercury vapor lamp, with 2 slits. Made from fine teak wood. Each
CHOKE FOR MERCURY VAPOUR LAMP. (SPARE). 80W or 125W (any one).
DIFFRACTION GRATING. Higer & Watts. 15000 L.P.I. Window size 50 x 35mm. (b) --do-- Indian. 15000 L.P.I. Window size 50 x35mm. (c) --do-- Imported. 7500 L.P.I. or 5000 L.P.I. or 2500 L.P.I. (any one) Window size 50mm x 35mm. d) 3-in-1 EDUCATIONAL DIFFRACTION GRATING. INDIAN.L.P.I. in one grating.
POLOROIDS. A part of polaroid's mounted in metal frame pair (b) --do-- Mounted on a graduated circular scale (brass) of. With pointer, to read the angle of rotation. pair
POLARIZER & ANALYSES. Each graduated in degree and fitted with vernier to read angle of rotation. With slow motion arrangement.
SLITS -MECHANICAL. (a) SLIT FOR RESOLVING POWER OF A TELESCOPE. Micrometer fitted. Slit with variable. (b) SLIT FOR MAGNIFYING POWER OF A TELESCOPE. With two slits of different lengths. (c) SINGLE SLIT. Adjustable. For Diffraction Experiment Using Sodium Light. Slit width variable. (d) DOUBLE SLIT. Adjustable. For Diffraction Experiment Using Sodium Light. Slit width variable
SLITS - FILM BASED, FIXED WIDTH. "Mounted between two glass plates. Size 60mm x 45mm. (a) SINGLE SLIT - For laser experiments (b) DOUBLE SLIT - For laser experiments 360.00 each (c) PIN HOLE - For laser experiments (d) LINE PATTERN for resolving Power of Telescope Expt. Slit width 2mm, Inter slit spacing 2mm
BINOCULAR, PRISMATIC, IMPORTED. Range 7x 50 10x 50 12x50 16 x 50 20x 50 Rs. 12960.00
Diffraction Grating Epidiascope
HARTLE'S OPTICAL DISC. Complete with optical set of accessories and source of light.
EPIDIASCOPE. "Complete with 1000W bulb, with filmstrip & micro slide attachment.
OVERHEAD PROJECTOR. With cellophane roll, grease pencil etc.
PROJECTION SCREEN. "" Size 50" x 70”. Complete with tripod stand.
ASTRONOMICAL TELESCOPE. 60x magnification, 50mm dia. achromatic objective with 50cm
DIRECT VISION SPECTROSCOPE. "With adjustable slit, achromatic objective and three element prisms. 3420.00 each (b) --do-- With wave length scale.
LENS HOLDER. Parallel bar type. for lenses up to 75mm in diameter. (b) Spring type, brass nickel plated. (c) Stand for Lens Holders, Metallic.
PIN ON STAND. Pin on metal stand, height adjustable.
MAGNIFIER (MAGNIFYING GLASS). With chromium plated metal frame & handle. Diameter 50mm 60mm 75mm 100mm 125mm 50mm .
LLOYD'S MIRROR. Mounted. With slow motion arrangement. Size 35x 120mm
GLASS SLAB. Made from sheet glass. Bubble-free. (a) 3" x 2" x ½ (75 x 50 x12mm). (b) 3" x 2" x 3/4 (75 x 50 x18mm). 1 (c) 4" x 2½" x 3/4 (100 x 60 x18mm).
a AIR WEDGE PLATE. "BMade from crown glass, having optically flat surface. (Price per pair). (a) Size 75 x 25 x 3mm 792.00 each (b) Size 50 x 25 x 4 mm
LENSES, CONCAVE OR CONVEX. Manufactured from plate glass. Optically true, highly polished & well edged. Focal lengt 10cms 15 or 20 or 25 cms Concave Convex Concave Convex 60mm dia. --- ---- (c) 75mm dia. -- -- -- -- 110.00 116.00 30 or 40 50 or 100 cms " 0" Glass Slab "boyds Mirror
0139" Lenses Concave Concave Convex
MIRRORS. CONCAVE OR CONVEX. "Highly Silvered & vanished. Focal length 10/12/15 or 25 cms. Diameter 50mm 60mm 75mm 100mm 150mm
AAutomatic Slide Projector with Slide tray and remote control, each MAGNETISM &ELECTROMAGNETISM
DEFLECTION MAGNETOMETER. Wooden base, one meter long. Complete with compass each (a) -- do-- but All Metal. All Metal base, with leveling screws. Complete with compass box. BM
VIBRATION MAGNETOMETER. "BM"Brass fitting. Complete with magnet & brass bar.
DIP CIRCLE. STANDARD. ROLLING NEDDLE TYPE.
DIP CIRCLE. STANDARD. PIVOTED NEDDLE TYPE.
SOLENOID INDUCTOR. "BM" 100cm long with 1000 turns in primary & secondary with 100, 250, 500 turns.
EARTH INDUCTOR. Automatic Release Type. All Metal No. of Turns -
BAR MAGNET. "BM" Alnico alloy, made from cobalt steel. Very powerful. Size 1.5 2" 3" 4" 6" (b) Regular Quality (b) Superior Quality (c) U-Shape
ELECTROMAGNET. "" 8" long coils, adjustable pole pieces, for use with 12 V supply. (b) -- do-- but coil 12" long, 1.5" in diameter, with soft iron core. 720.00 each (c) Power Supply for above.
ELECTROMAGNET. MODEL EM-20. "BM" Field strength up to 20,000 gausses in 1 cm gap.
(b) Power Supply for Electromagnet EM-20. 100V @ 10A
"BM 0140" Mirrors Concave & Convex Deflection Magnetometer 0144-45" Dip Circle
ELECTROMAGNET. MODEL EM-10. Field strength up to 10,000 gausses in 1 cm gap. (b) Power Supply for Electromagnet EM-10. 75V @ 5A
ELECTROMAGNET. MODEL EM-5. "BM" Field strength up to 20,000 gausses in 1 cm gap. 50400.00 each (b) Power Supply for Electromagnet EM-5. 40V @ 4A BM
HIBBERT'S MAGNETIC BALANCE
HIBBERT'S MAGNETIC STANDARD. For calibrating Ballistic Galvanometer. Each
SELF INDUCTANCE COIL. 3000 turns, mounted on wooden base.
SELF & MUTUAL INDUCTANCE COIL. 3000 turns in primary, laps of 1000, 2000 & 3000 in secondary.
SELF & MUTUAL INDUCTANCE COIL. wooden bobbin 25cms diameter, 500 turns. (b) --do-- With one coil 500 turns & other coil with tapings of 100, 2250 & 500 tunes.
SEARCH COIL. Resistance 25 ohms, turns 100, mean diameter 10mm. 540.00 each (b) Resistance 25 ohms, turns 10, mean diameter 10mm. (c) Resistance 25 ohms, turns 10, mean diameter 5mm.
HYSTERESIS CURVE APPARATUS. "BM" With solenoid, compensating coil, magnetometer but without battery.
GAUSS METER. DIGITAL. Mains operated. With Indium Arsenide probe. Range 0 to 20kgauss. each SOUND
TUNING FORK. PYE TYPE. Chromium plated. Set of 8. Frequencies 256 to 512 Hz.
TUNING FORK. WELCH TYPE. Heavy pattern, large size, set of 8. Frequencies 256 to 512 Hz.
TUNING FORK. "RAGGS ENGLISH". Blue steel, set of 8. Frequencies 256 to 512 Hz 12600.00 each
TUNING FORK. SUPERIOR QUALITY. TESTED. Aluminum, set of 8. frequencies 256 to 512 hz.
TUNING FORK, ELCTRICALLY MAINTAINED.The length of fork is 12". Work on 6 volts. each "BM 0148" Bar Magnet 0149" Electro Magnet
MELDES APPARATUS. With tuning fork, heavy base, coil, pan, pulley & chord. 5040.00 each (b) --- do --- INCO PATTERN. With extra heavy base.
EELCTRICAL VIBRATOR. Complete with pulley, pan & chord but without weights.
KUNDT'S TUBE. " Borosil glass tube with aluminum stop cock. (b) G. Clamp to clamp Kundt's tube to the table (two pieces required). (c) Lycopodium Powder. For use with Kundt's tube (100 packets).
FALLING PLATE APPARATUS. "BM" All metal. Complete with two tuning forks.
SONOMETER. One meter long, with brass fittings 2340.00 each (b) Slotted Weight For Above 9 weights & 1 hanger - 500gm each, total 5 kg. (c) Hand Electromagnet with power supply for A. Sonometer experiment.
RESONANCE APPARATUS. With brass tube & brass reservoir. Tube diameter 1".(b) --- do --- same as above but tube diameter is 1.5".
PLATINUM RESISTANCE THERMOMETER. "BM" Cambridge type, winding of pure platinum wire. 8
UNIVERSAL SHUNT. DIAL TYPE. "BM" Shunts of 1,3,10, 30,100,300, 1000, 3000,& 10000Ω. Total resistance 10000Ω.
VOLT RATIO BOX."BM" Range 1.5V, 15V, 30V, 150V, 300V, 750V, Total resistance 37500Ω
POTENTIAL DIVIDER. DIAL PATTERN. (a) 10 coils of 20Ω. Total resistance 200Ω. 2520.00 each (b) 15 coils of 20Ω. Total resistance 300Ω. (c) 20 coils of 100Ω. Total resistance 2000Ω. POST OFFICE BOXES & MEGOHM BOXES
POST OFFICE BOX. "BM" ½ " Brass blocks. (a) Plug Type. 4 Ratio Coils (1:10:100:1000). Series arm 1 to 500 ohms. (b) Plug Type. 3 ratio Coils (10:100:1000). Series arm 1 to 500 ohms. (c) Dial Type. 6 dials. Constantin Coil Manganin Coil 6120.00 6660.00
PLUG TYPE RESISTANCE BOX. "BM" ½" Brass blocks Range in ohms total Resistance constantan Coil Manganin Coil (a) 0.01 Ω to 0.5 Ω 1.1 Ω -- (b) 0.1 Ω to 0.5 Ω 1.0 Ω 1890.00 1980.00 each (c) 0.1 Ω to 1 Ω 2.0 Ω 1944.00 2052.00 each (d) 0.1 Ω to 5 Ω 11.0 Ω 2214.00 2376.00 each (e) 0.1 Ω to 10 Ω 21.0 Ω 2340.00 2520.00 each (f) 0.1 Ω to 50 Ω 111.0 Ω 2646.00 2952.00 each (g) 0.1 Ω to 100 Ω 211.0 Ω 2880.00 3150.00 each (h) 0.1 Ω to 500 Ω 1111.0 Ω 3510.00 3960.00 each (i) 1.0 Ω to 10 Ω 20.0 Ω 1944.00 2052.00 each (j) 1.0 Ω to 50 Ω 110.0 Ω 2214.00 2376.00 each (k) 1.0 Ω to 100 Ω 210.0 Ω 2340.00 2520.00 each (l) 1.0 Ω to 200 Ω 410.0 Ω 2430.00 2610.00 each (m) 1.0 Ω to 500 Ω 2110.0 Ω 2880.00 3150.00 each (n) 1.0 Ω to 1000 Ω 11110.0Ω 3510.00 3960.00 each (o) 1.0 Ω to 5000 Ω 11110.0 Ω 3420.00 3960.00
0177-178" Potentiometer "BM 0176" Ticker Tape Timer "BM 0186" Post Office Box 11(p) 1.0 Ω to 10000 Ω 211110.0 Ω 3780.00 4140.00 each BM
DIAL PATTERN RESISTANCE BOX. "BM" Total Resistance Constanton Coil Manganin Coil Single Dial (a) X0.1 Ω 1Ω 1080.00 1260.00 each (b) X1.0 Ω 10Ω 1080.00 1260.00 each (c) X10 (d) X100 Ω 1000Ω 1080.00 1260.00 each (e) X1000Ω 10000Ω 1080.00 1260.00 each Two Dials. (f) X0.1 & 1.0 Ω 11Ω 2160.00 2160.00 each (g) X1.0 & 10 Ω 111Ω 2160.00 2160.00 each (h) X10 & 100 Ω1100Ω 1200.00 2430.00 each (i) X100 & 1000 Ω 11000Ω 2160.00 2160.00 each Three Dials. (j) X0.1 & X1.0 & X10 Ω 111 Ω 3240.00 3510.00 each (k) X1.0, & X10 & X100 Ω 1110 Ω 3240.00 3510.00 each Four Dials. (l) X0.1, X1.0, X10 & X100 Ω 1111 Ω 4320.00 4770.00 each (m)X1.0, X10, X100 & X1000Ω 1110 Ω 4320.00 4770.00 each Five Dials. (n) X0.1,X1.0,X10X100&X1000Ω 11111Ω 5400.00 5940.00 each (o) X1.0,X10,X100X1000&X10000Ω111110Ω RESISTANCE COILS BM0190 STANDARD RESISTANCE COIL. MANGANIN COIL. "BM" Enclosed in metal container with moisture free oil. Resistance range : Choose any one value between 0.001Ω to 200Ω.
RESISTANCE COIL. "BM" Carbon Resistance. Enclosed in round Bakelite container. Ordinary Quality Resistance range: Choose any one value between 0.01Ω to 100Ω.
RESISTANCE COIL 2 TERMINAL TYPE. Manganin coil. Enclosed in Bakelite container with 2 terminals. Resistance range: Choose any one value between 0.01Ω to 200Ω.
RESISTANCE COIL 4 TERMINAL TYPE. " Manganin Coil. Enclosed in Bakelite container with 4 terminals (2P&2C). Resistance range: Choose any one value between 0.01Ω to 200Ω. 450.00 each CONDENSERS BM0194 FIXED CONDENSER. Comprising high quality paper condensers fitted in teak wood box with ebonite top. (a) Capacity: 0.001 or 0.002 or 0.005 or 0.01 or 0.02 or 0.05 or 0.1 or "BM 0188-0189" Resistance Box "0190193" Resistance Coils
" Condenser (b) Capacity: 0.5 µfd or 1 µfd or 2 µfd (any one value) (c) Capacity: 5µfd or 10µfd. BM
DECADE CONDENSER. "BM" Manufactured in 1 or more dials, eah dial consisting of 10 steps. Single Dial Total Capacitance (µfd) (a) X0.0001 µfd 0.001 µfd (b) X0.001 µfd 0.01µfd (c) X0.01 µfd 0.1 µfd (d) X0.1 µfd 1.0 µfd 1 (e) X1.0 µfd 10.0 µfd Two Dials. (f) X0.0001 & X 0.001 µfd 0.011 µfd (g) X0.001 & X 0.01 µfd 0.11 µfd (h) X0.01 & X 0.1 µfd 1.1 µfd (i) X0.1 & X 1.0 µfd 11.0 µfd Three Dials. (j) X0.0001 & X 0.001 & X0.01µ fd 0.111 µfd (k) X0.001 & X 0.01 & X0.1µfd 1.11 µfd (l) X0.01 & X 0.1 & X1.0µ fd 11.1 µfd Four Dials. (m) X0.0001 & X 0.001 & X0.01 & X0.1µfd 1.111 µfd 4320.00 each (n) X0.001 & X 0.01 & X0.1 & X1.0µfd 11.11 µfd 4410.00 each Five Dials. (o) X0.0001 & X 0.001 & X 0.01 & X0.1 & x1.0µfd 11.111 µfda I INDUCTORS
FIXED INDUCTOR. Air cored. (A) 100µH or 200µH or 400µH or 1mH or 2mH or 5 mH or 10mH (any one value (b) 20mH or 50 mH or 100mH or 200 mH (any one value). c) 500 mH or 1H or 2 H or 5 H or 10H (any one value.
DECADE INDUCTOR.Single Dial. Total Inductance (a) X0.1 mH 1 mH (b) X1 mH 10 mH (c) X10mH 100 mH (d) X0.1 H 1 H 1530.00 each (e) X1H 10H 1 (f) X10H " Decade Condenser Four Dial " 0195" Decade Condenser Two Dial. (g) X0.1mH & X1.0 mH 11 mH (h) X1.0mH & X10mH 111 mH (i) X10mH & X100mH 1.1 H h (j) X100mH & X1H 11 (k) X1H & X10H 110 Three Dial. (l) X0.1 mH & X1mH & X10mH 111 mH (m) X1.0 mH & X10mH & X100mH 1.1 H (n) X10mH & X100mH & X1H 11.1 H (o) X100mH & X1H & X10H 11.1 H each Four Dial. (p)X0.1 mH & X1mH & X10mH & X100mH 1.111 H (q)X1.0 mH & X10mH & X100mH & X1H 11.11 H (r)X10mH & X100mH & X1H & X10H 111.1 H Five Dial. (s)X0.1 mH & X1mH & X10mH & X100mH & X1H 11.111 (t)X1.0 mH & X10mH & X100mH & X1H & X10H 111.11 H each E.M.F. SOURCES & VOLTAGE CHANGERS
COPPER VOLTAMETER. Ebonite top. Three plate type. Complete with plastic jar but without chemical.
LECLANCHE CELL. complete with plastic vessel, porous pot & zinc rod but without chemical. (b) Electronic Substitute for Leclanché Cell. 0200 DANIEL CELL. Complete with jointless copper vessel, porous pot & zinc rod but without chemical. (b) Electronic Substitute for Daniel Cell. "
ELECTRONIC SUBSTITUTE FOR STANDARD CADMIUM CELL. Mains operated. Output. 1.018V. 2160.00 each BM
POROUS POT. "BM" (a) For Leclanché Cell. Superior quality, with brass screw terminal. 155.00 each (b) For Daniel 203 ZINC ROD. 6" long, 3/4" in diameter, With brass terminal. (b)---do--- Common quality 6" long,10mmindiameter, With brass terminal. 10204 CARBON ROD. "BM" 6" long & 3/4" in diameter, With terminal.
PORTABLE CELL OR ACID ACCUMULATOR. "Globe". Uncharged, dry, Available in following capacities. (a) Type SGP45. 2 volts @ 45 A.H. Leclanché Cell Copper Voltmeter
0200" Daniel Cell "0203" Zinc Rod "0204" Carbon Rod Type SGP60. 2 volts @ 60 A.H. (c) Type SGP75. 2 volts @ 75 A.H. (ii) ACID ACCUMULATOR. MASS PLATE. "Globe". (a) Type Mass 20, 2 volts @ 20 A.H. on slow discharge. (b) Type Mass 45, 2 volts @ 45 A.H. on slow dischar B
BATTERY ELIMINATOR. "Unregulated output. Input 220V A.C. (a)Type A : Output 2,4,6,8,10, & 12V D.C. @ 1Amp. (b)Type B : Output 2,4,6,8,10, & 12V D.C. @ 2Amp. 1620.00 each (c)Type C : Output 2,4,6,8,10, & 12V D.C. @ 3Amp. (d)Type D : Output 2,4,6,8,10, & 12V D.C. @ 5Amp.
IC REGULATED BATTERY ELIMINATOR. Highly stable output. Input 220V A.C. (a)Type A : Output 2,4,6,8,10, & 12V D.C. @ 2Amp. (b)Type B : Output 2,4,6,8,10, & 12V D.C. @ 3Amp.
BATTERY CHARGER. With meter to monitor the charging current. (a)Output 6, 12, 18 & 24V D.C. @ 3A (a)Output 6, 12, 18 & 24V D.C. @ 5A 45000.00 each (a)Output 6, 12, 18 & 24V D.C. @ 12A
STEP DOWN TRANSFORMER. Input 220V A.C. (a) Output 6 & 12 volts A.C. @ 3amps. 1620.00 each (b) Output 3,6,9,12,& 15 volts. A.C. @ 3 amps 1800.00 each BM0213 VARIAC. (DIMMERSTAT). "BM" Single phase. Output variable from 0 to 270V for an input voltage of 240V A.C. Capacity - 2Amps 4Amps 8Amps 10 Amps 15 Amps
