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Physics
?g? By Free Fall Apparatus
For determining the value of ?g? by measuring the time taken by a falling steel ball. The apparatus consists of a release unit and a trip unit. Both these units size 13x9x1cm are fitted with 4mm sockets and can be readily clamped on to a 12mm diameter rod. The release unit is fitted with a small solenoid type electromagnet which holds a steel ball. The solenoid helps in the prompt release of the ball on being disconnected. The trip unit has a swinging plate and is fitted with a switch. The switch is normally held closed by a magnet and is opened when the ball falls on the plate. The time of fall is measured by a digital Centisecond Timer. Supplied complete with steel balls but without Centisecond Timer, retort stand and base.
-01 Centisecond Timer for ?g? by free fall apparatus.
Accessories Set, Van De Graaff
The set comprises of:
» Faraday's Pail
» Perspex cylinder with suspended metallised sphere
» Head of hair
» Point discharge
» Electric whirl
» Neon Bulb
» Electric Tester
Air Blower
Ammeter
Ammeter D.C.
Moving coil meters. Scale length 60mm approx. with knife edge pointer and anti parallax mirror scale. Size 80x110x80mm. Accuracy ±2% F.S.D.
| Single Range | |
| -01 | Microammeter, 0-25µA |
| -02 | Microammeter, 0-50µA |
| -03 | Microammeter, 0-100µA |
| -04 | Microammeter, 0-500µA |
| -05 | Milliammeter, 0-1mA |
| -06 | Milliammeter, 0-10mA |
| -07 | Milliammeter, 0-100mA |
| -08 | Milliammeter, 0-500mA |
| -09 | Ammeter, 0-1A |
| -10 | Ammeter, 0-3A |
| -11 | Ammeter, 0-5A |
| -12 | Ammeter, 0-10A |
| Double Range | |
| -13 | Ammeter, 0-1A and 0-5A |
| Triple Range | |
| -14 | Ammeter, 0-50mA, 0-500mA and 0-5A |
| Rectifier type. | |
| -15 | Milliammeter, 0-1mA |
| -16 | Milliammeter, 0-10mA |
| -17 | Milliammeter, 0-100mA |
| -18 | Milliammeter, 0-500mA |
| -19 | Ammeter, 0-1A |
| -20 | Ammeter, 0-3A |
| -21 | Ammeter, 0-5A |
| -22 | Ammeter, 0-10A |
Bar and Gauge
Bar Breaking Apparatus
Bar Magnets With Keepers, Alnico
Consist of two painted bar magnets with poles stamped and keepers. Supplied in a handy wooden storage box.
Length :| -01 | 50mm |
| -02 | 75mm |
| -03 | 100mm |
Bar Magnets With Keepers, Steel
Consist of two painted bar magnets with poles stamped and keepers. Supplied in a handy wooden storage box.
Length :| -01 | 50mm |
| -02 | 75mm |
| -03 | 100mm |
Barlows Wheel
Calorimeter, Electric (Joule?s)
For determination of specific heat capacity of the liquid by electrical method. Consists of an inner vessel 75x50mm diameter, carried on a 100x75mm diameter outer vessel. Fitted with a Bakelite cover with two 4mm sockets which connects to a 6 ohm heating coil having maximum current capacity of 1A. Complete with rubber stopper for holding thermometer (not supplied) and a stirrer.
| -01 | Aluminium construction. |
| -02 | Copper construction |
Calorimeter, Student
Consists of one spun inner vessel 75x50mm diameter, carried on a 100x75mm diameter outer vessel. Felt jacket is provided between the vessels and also at the bottom of the outer vessel for proper insulation. Fitted with a Bakelite cover with two holes. One hole is for rubber stopper which will hold the thermometer and the other hole is for the stirrer. Complete with rubber stopper, stirrer and washer, but without thermometer.
-01 | Aluminium construction. |
-02 | Copper construction. |
carbon
Components On Base
Compound Strip
Conductivity Kit
Comprising rods of different materials and some of different thickness to enable students to test for themselves different thermal conductivities. Kit comprises:
| Category | Diameter (mm) | Qty. |
| Aluminium | 3 | 8 |
| Glass | 3 | 8 |
| Brass | 1.5 & 3 | 8 each |
| Copper | 1.5 & 3 | 8 each |
| Iron | 1.5 & 3 | 8 each |
Cylindrical Magnets With Keepers, Alnico
Consist of two painted bar magnets with poles stamped and keepers. Supplied in a handy wooden storage box.
Length :| -01 | 75mm |
| -02 | 100mm |
| -03 | 150mm |
Cylindrical Magnets With Keepers, Steel
Consist of two painted bar magnets with poles stamped and keepers. Supplied in a handy wooden storage box.
Length :| -01 | 75mm |
| -02 | 100mm |
| -03 | 150mm |
D. V. Spectroscope With Wavelength Scale
body and variable optical slit adjustable by knurled head rotating ring. Wooden storage case included.
DC Motor
DC Shunt
Decade Capacitance Box
One Dial
Consists of one or more dials each consisting of ten-position switch and two 4mm sockets fitted in a metal box. Accuracy ?1%.
-01 10x0.01?F
-02 10x0.1?F
-03 10x1?F
Two Dials
-04 10x0.01?F and 10x0.1?F
-05 10x0.1?F and 10x1?F
Three Dials
-06 10x0.01?F, 10x0.1?F and 10x1?F
Four Dials
-07 10x0.001?F, 10x0.01?F, 10x0.1?F and 10x1?F
Decade Potentiometer
Deflection Magnetometer
Demonstration Dynamo
Demonstration Motor
Demonstration Transformer
Digital Meter
A very convenient meter having a clear 3½ digit LCD display. Provided with a control for switching ON and OFF the meter. Fitted with a pair of 4mm sockets. Operates on 9V battery. Accuracy ±2%. Size 80x110x80mm approx. With battery.
| Range D.C. Current | |
| -01 | 0-200µA |
| -02 | 0-2mA |
| -03 | 0-20mA |
| -04 | 0-200mA |
| -05 | 0-2A |
| -06 | 0-10A |
| Range D.C. Voltage | |
| -07 | 0-200mV |
| -08 | 0-2V |
| -09 | 0-20V |
| -10 | 0-200V |
Dip Needle
Direct Vision Spectroscope
optical slit adjustable by knurled head rotating ring. Wooden storage case included.
Dynamic Model
Electric Bell
Electromagnet
Friction Rods
| -01 | Glass Rod, 300x12mm |
| -02 | Ebonite Rod, 300x12mm |
| -03 | Acrylic Rod, 300x12mm |
| -04 | Half Brass - Half Glass Rod, 300x12mm |
| -05 | Half Brass - Half Ebonite Rod, 300x12mm |
Galvanometer
Moving coil meters. Scale length 60mm approx. with knife edge pointer and anti parallax mirror scale. Size 80x110x80mm. Accuracy ±2% F.S.D.
| -01 | 3.5mA - 0 - 3.5mA, resistance 10ohm |
| -02 | 50µA - 0 - 50µA, resistance 1000ohm |
Galvanoscope
Hand Stroboscope
High Stability Decade Megoh
Horseshoe Magnet
Steel with keepers. Painted red.
Length :| -01 | 50mm |
| -02 | 75mm |
| -03 | 125mm |
hydrogen electrode
Induction Coil
Ingen-Hausz?s Apparatus
Inter scale Demonstration Meter
The meter can be used for demonstration of A.C or D.C. ammeter or voltmeter with different interchangeable scales. A magnetically damped, spring-controlled moving coil movement with a pointer, housed in a plastic case with glass front and rear panels enable all working parts to be clearly seen. With a pair of 4mm socket terminals and side zero adjustment control. The scales, 200mm long (approx.) are boldly marked and figured on both sides. Each scale is fitted through a slot in the side of the case and has a plug connector which also serves to locate and align the scale positively in position. Basic sensitivity of the meter is 5mA, 100mV F.S.D. Without scale. Accuracy: ? 2.5%, F.S.D., Scales:
| Range D.C. Current | |
| -01 | 2.5-0-2.5mA |
| -02 | 0-10mA |
| -03 | 0-100mA |
| -04 | 0-500mA |
| -05 | 0-1A |
| -06 | 0-5A |
| Range A.C. Voltage | |
| -07 | 5-0-5V |
| -08 | 0-5V |
| -09 | 0-10V |
| -10 | 0-300V |
| Range A.C. Current | |
| -11 | 0-10mA |
| -12 | 0-50mA |
| -13 | 0-100mA |
| -14 | 0-500mA |
| -15 | 0-1A |
| -16 | 0-10A |
| Range D.C. Voltage | |
| -17 | 0-5V |
| -18 | 0-10V |
| -19 | 0-50V |
| -20 | 0-300V |
Intermediate Spectrometer
Jockey
Junior Spectrometer
and is read to 0.1 degree (6 minutes of arc) with the help of the vernier fixed to the telescope arm. The scale can be rotated through 180? and locked in any desired position. The telescope has both the coarse and fine adjustment for exact readings. The prism table, 75mm diameter, has screwed holes for fixing prism and grating holders. It has lines marked to assist placing
of prism with respect of table levelling screws. Prism holder can accommodate prisms up to 38mm high. Supplied with prism holder, grating holder and tommy bar for adjustment of optical axis.
Kelvin Cum Wheatstone Bridge
Key
Key 2
Key 3
