For precise measurement of low resistance, capable of measuring resistance from 0.1 micro ohm to 1.1 ohms. Ten standard resistance fo manganin are provided in steps of 0.01 oh each in dia form with five multiply ratio of 0.001, 0.01, 0.1, 1 and 10 ohms. Ther circular slide wire of 0.01 ohms is also made from thick manganin wire having extremely low temperature coefficient. Calibrated to ± 0.05 to 0.02 % with heavy construction.
Same as 633, Range - Miliammeter - 100 mA, 250 mA, 500 mA etc. Range - Microammter 50 uA, 100 uA, 250 uA and 500 uA
3½ Digit Display with 9 volt battery. Range Avilable DC Current - 199.99uA 1.99mA 19.99mA 199.9mA. 19.99 A DC Voltage - 199.9mv 1.99V 19.99V 199.9V
The demostration meter is used to demostrate the working principle of AC and DC Ammeter, Voltmeter and Galvanometer with the help of interchangeable plastic Scales. Amagnetically damped spring controlled moving coil movement is housed in a plasic case with glass front and rear panel. A pair of 4 mm socket terminals is give on the right side to apply voltage and current. A special locking arrangement and a centrl / side zero adjustment control is given on the left side with the help of two knobs. The interchageable scales are boldy marked on both sides enabling the class to view from the front and the demostrator from the rear. Each scale is fitted through a slot on the right side of the case and has a plug connector which also serves to locate and align the scale positively in position. Locking system is provided to lock the pointer to aovid damage is transist. Basic Movememt : 5mA - 100 m V F.S.D. Scale Lenght : 200 mm approx. Accuracy : ± 2.5 % F.S.D. Dimensions : 300 x 150 x 300 mm approx. Weight : 2 kgs. approx. Supplied with three standard scales.
A multi range instrument for measurement of voltage, current and resistance. Moving coil meter having red pointer over two colour scale. Complete with test leads, probes and internal battery.
Having standard winding of 2-5-50 or 2,50,500. The bakelite ring with winding it mounted on bakelite base with four terminals. No. of turns is marked betwee the terminals. Th whole assembley rotates on a non magetic tripod base with non magnetic levling screw, Compass box is mounted on non- magetic metallic cup and is free to roated around it. Compass box is graduated in degrees. Avaialbe in Alumminu Parts / Brass Parts
To dtermine the variation of magnetic field along the axis of a coil, a circular non magnetic frame has copper wire wound on it. The ends of wire are connected to terminals on wooden board. Aluminium rods are graduated upto 50 cm on both sides. A permanent magnet compass siting on a non magnetic platform travels on alumimium rod.
Suitable for use with ballistic galvanometer, provided with 6 volt step down transformer, 6V / 20 W lamp housed in metal container, a translucent perspex scale attachment graduated in 25-0-25 or 0-50 cm plug and cord
Higly sensitive instrument to be used as null detector in wheatstone bridge and potentiometer experiments, with built in lamp and scale arrangement in bakelite case, a sensitive moving coil system is suspended in a taut band manner in a uniform field of permament magnet. Zero adjustment knob is provoed to set spot of light. time period app 1.58 second working on 220 V AC available in two different coil resistance. Available : 100 / 600 ohms
Fitted on board with banana socket and circuit diagram
Fitted on board with banana socket and circuit diagram
Fitted on board with banana socket and circuit diagram
Mounted on board with banana socket and circuit diagram
To verify Ohm’s Law, consists of one dial type rheostat, M065 moving coil voltmeter 5 volt & miliammeter 500 mA, mounted in spray pointed metal box with terminals, Supplied without resistance coil and power supply.
Versatile instrument to verity ohms law as well as law of resistance in series & parallel, consists of two meter, five transparent resistance coils and a step down transformer giving 1.5, 3, 4.5 volts, housed in metal case & provided with on/off witch, LED indicator and lead wire
Continously variable with two MO65 moving coil analog meters. The unit is fabricated keeping stringent engineering standards in mind and susing best available components. The unit has voltmeter and ammeter, pilot light, on/off switch and provided with 2 terminals for output along with four knobs for coarse and fine voltage an current control Available : 15/30 Volt, 1 Amp
Basic feature are the same as 653 but output is displayed on two 3½ digit panel meter. Available : 15/30 Volt, 1 Amp
With built - in power supply and two MO65 moving coil meters, workable on 230 volts AC fitted with diode valve on front panel. Consistof Hight voltage : 0-250 volts AC at 25 mA continously variable Low voltage : 6.3 volts AC at 2 amps with built in rheostat for filament current control.
With built - in power supply and two MO65 moving coil meters, workable on 230 volts AC fitted with triode valve on front panel. Consist of Hight voltage : 0-300 volts AC at 30 mA continously variable Bias : 0-15 volts DC at 5mA continously variable.Low voltage : 6.3 volts AC at 2 amps with built in rheostat for filament current control.
PN Junction Diode App.) with built in dual power supply, workable on 230 volts AC, fitted wtih semi conductor diode and meter connection are brought out on panel with separate terminals, Four MO 65 moving coil meters 90 V, 100uA, 3V and 15 mA are provided. Output Bias : 0-1 volts DC continously variable (for forward bios) Input Bias : 0-30 volts DC continously variable (revese bias)
