Test and Measuring Instruments Manufacturer, Suppliers and Exporter in India
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Last updated: 22 October 2026
Quick Answer
Test and Measuring Instruments are bench instruments for generating, measuring and analysing electrical signals and physical quantities in practical classes: audio and R.F. oscillators, a pulse generator, voltmeters, bridges, a dual trace oscilloscope, a signal tracer and meters for sound, speed and pain threshold. JLab currently lists 20 items in this category, most of them mains-operated meters and signal sources for electronics and physics experiments.
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Explore the Test and Measuring Instruments Range
| Range | Items | What it covers |
|---|---|---|
| Oscillators and Signal Generators | 6 | Audio-frequency oscillators from 1 Hz to 1 MHz with sine, square and triangular outputs, R.F. oscillators from 100 kHz to 280 MHz with AM and FM modulation, a 3 MHz oscillator for ultrasonic and Lecher wire experiments, and a rectangular pulse generator. |
| Meters and Testers | 8 | A vacuum tube voltmeter, a clamp-on meter for 500 A AC, a Q meter for inductors, power output and distortion factor meters for amplifiers, a transistor gain tester, an absorption wave meter from 100 kHz to 100 MHz and a radio signal tracer. |
| Bridges and Oscilloscope | 3 | A solid-state L.C.R. bridge for resistance, capacitance and inductance, a conductivity bridge for electrolyte solutions working at 50 Hz and 1 kHz, and a 20 MHz dual trace oscilloscope. |
| Sound, Speed and Pressure Threshold Meters | 3 | A battery-operated sound level meter reading 50 to 110 dB, a stroboscope that measures 100 to 10,000 RPM without touching the shaft, and digital and dial-type algometers for pressure threshold and pain tolerance. |
Test and Measuring Instruments Specifications
The tables give sample instruments from each group with the frequency, measuring range, output or display stated on each instrument's own page.
Oscillators and Signal Generators (6)
| Product | Specification |
|---|---|
| A.F. Oscillator Function Generator Cum Digital | Frequency range: 1 Hz to 1 MHz, variable, in five decade ranges; Waveforms: Sine and square; Output impedance: 600 ohm. |
| A.F. Oscillator Digital | Frequency range: 1 Hz to 250 kHz in five selectable bands; Waveforms: Sine, square and triangular; Amplitude: 1 to 10 V peak-to-peak, continuously variable in three coarse steps with a fine control. |
| R.F. Oscillator AM and FM | Frequency range: 200 kHz to 280 MHz, variable; Modulation: Output modulated at 400 Hz and 1 kHz; FM: FM modulation switched in automatically above 50 MHz. |
| Pulse Generator | Pulse width: 1 µs to 1 s, variable; Output voltage: 1 V to 15 V; amplitude selectable to trigger TTL circuits. |
Meters and Testers (8)
| Product | Specification |
|---|---|
| Vacuum Tube Volt Meter (V.T.V.M) | Measurements: AC voltage, DC voltage and resistance; AC voltage ranges: 1.5, 5, 15, 50, 150, 500 and 1500 V full-scale deflection; Meter: Rectangular, 110 x 90 mm. |
| Q Meter | Measuring frequency: 1 kHz or 10 kHz (as listed); Q measuring range: 0.1 to 100. |
| Clamp On Meter | AC current: 0–500 A, measured by the clamp through induction in a coil; AC voltage: 0–500 V. |
| Distortion Factor Meter | Measures: Distortion added by an amplifier, read as a percentage; Frequency range: 20 Hz to 20 kHz (audio range). |
Bridges and Oscilloscope (3)
| Product | Specification |
|---|---|
| L.C.R. Bridge | Resistance range: 0.01 ohm to 1 megohm, in seven ranges; Capacitance range: 2 pF to 110 µF; Inductance range: 2 µH to 110 H, in seven ranges. |
| Conductivity Bridge | Measures: Conductance of electrolyte solutions, or their resistance, directly; Working frequencies: 50 Hz and 1 kHz; Conductance range: 1 mho to 1 micromho (1 S to 1 µS) in seven ranges. |
| Dual Trace Oscilloscope | Bandwidth: DC to 20 MHz; Display: Cathode ray tube, 80 x 100 mm, bright and sharply defined trace; Sweep speeds: 0.2 s/div to 0.1 µs/div, calibrated, ±5%. |
Sound, Speed and Pressure Threshold Meters (3)
| Product | Specification |
|---|---|
| Sound Level Meter | Measuring range: 50 to 110 dB; Indicator: Moving-coil meter calibrated in decibels; Power: Battery operated. |
| Stroboscope | Measuring range: 100 to 10,000 RPM; Read-out: Calibrated dial. |
| Algometer | Measures: Pressure threshold and pain tolerance, as reported by the person tested; Models: Digital algometer; dial-type (analogue) algometer; Tip: Supplied with a tip of 1 sq cm (as listed). |
Who Buys This Range
College physics and electronics laboratories that run oscillator, bridge and oscilloscope experiments, including ultrasonic and Lecher wire work with the 3 MHz R.F. oscillator; radio servicing classes that trace faults with the signal tracer and transistor tester; and psychology or physiology laboratories measuring pain tolerance with the algometer.
Frequently Asked Questions
What frequency ranges do the oscillators in this range cover?
The A.F. Oscillator Function Generator Cum Digital covers 1 Hz to 1 MHz and the A.F. Oscillator Digital 1 Hz to 250 kHz. The R.F. Oscillator covers 100 kHz to 30 MHz, the R.F. Oscillator AM and FM 200 kHz to 280 MHz, and the R.F. Oscillators unit runs at 3 MHz.
What can the L.C.R. Bridge and the Conductivity Bridge measure?
The L.C.R. Bridge measures resistance from 0.01 ohm to 1 megohm, capacitance from 2 pF to 110 µF and inductance from 2 µH to 110 H. The Conductivity Bridge measures the conductance or resistance of electrolyte solutions at 50 Hz and 1 kHz, from 1 S to 1 µS in seven ranges.
Which instrument measures speed without touching the machine?
The Stroboscope shows the stroboscopic effect and reads the speed of moving articles from 100 to 10,000 RPM on a calibrated dial, with no connection to the revolving wheel or shaft. It is mains operated, with battery operation as an option.
Request a Quote
Send the instrument names and quantities, for example the Dual Trace Oscilloscope or the L.C.R. Bridge, through the contact page.
Sound Level Meter
Product Code : EL-TAMI-1006
Battery-operated sound level meter with a moving-coil meter calibrated in decibels, measuring sound pressure from 50 to 110 dB in workshops, mills, vehicles and public places.
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Stroboscope
Product Code : EL-TAMI-1007
Instrument is to see the stroboscopic effect and determine the speed of moving articles without connecting it with revolving wheel shaft.
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Clamp On Meter
Product Code : EL-TAMI-1009
Clamp-on meter that measures AC current up to 500 A by induction in a coil without breaking the circuit, and AC voltage up to 500 V; DC and resistance are measured with leads.
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Absorption Wave Meter
Product Code : EL-TAMI-1015
The instrument is to detect Radio frequency radiations. The wave length and strength can be known by tuning on L.C. Circuit.
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Transistor Tester
Product Code : EL-TAMI-1016
Tests general-purpose, low-power PNP and NPN transistors; a moving-coil meter calibrated in gain (hFE) shows the reading. Works on 220 V, 50 Hz mains.
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Distortion Factor Meter
Product Code : EL-TAMI-1017
Measures amplifier distortion: a pure sine wave is fed in, the amplified signal passes through filters and the distortion is read on a meter as a percentage, from 20 Hz to 20 kHz.
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Q Meter
Product Code : EL-TAMI-1018
Measures the Q (quality factor) of an inductor, needed when designing coils or transformers, at 1 kHz or 10 kHz over a range of 0.1 to 100, read on a moving-coil meter.
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Vacuum Tube Volt Meter (V.T.V.M)
Product Code : EL-TAMI-1019
Vacuum tube voltmeter in a steel cabinet with a 110 x 90 mm rectangular meter, for AC and DC voltage and resistance measurement; works on 220 V, 50 Hz.
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