Galvanometer EDSPOT
Product Code : LSK-LM-11131
Galvanometer EDSPOT (SKU LSK-LM-11131) is a mains-operated light-spot galvanometer that shows very small currents and voltages as a hairline inside a bright spot of light on a translucent screen. Teachers use it as a sensitive detector and demonstration meter in senior school, B.Sc. and polytechnic physics labs. Science Lab Supplies sends it from Ambala, India to schools, colleges, training institutes, tender contractors and distributors.
Specifications
Every specification is set out in the table below. In short, the instrument combines a taut-suspension movement, a lamp unit and a millimetre scale in one housing, offers four sensitivity steps from x1 to x0.001, accepts signals through 4 mm colour-coded sockets and runs on 220–240 V AC mains.
| Specification | Value |
|---|---|
| SKU | LSK-LM-11131 |
| Type | Light-spot galvanometer |
| Movement | Integral taut suspension movement |
| Built-in units | Movement, lamp unit and scale in one instrument |
| Indication | Hairline in a bright light spot on a translucent screen |
| Vibration damping | Damps transverse suspension vibrations without affecting the electrical characteristics |
| Signal input | 4 mm colour-coded socket terminals |
| Front controls | Lock/Unlock, zero adjustment and sensitivity adjustment |
| Scale graduation | Millimetres |
| Scale range, left zero | 0–18 cm |
| Scale range, centre zero | 9–0–9 cm |
| Range attenuation | x1, x0.1, x0.01 and x0.001 |
| Attenuation applies to | Both current and voltage sensitivities |
| Input resistance | Constant on every sensitivity step |
| Power supply | 220–240 V AC mains |
| Mains frequency | 50/60 Hz |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Spot Galvanometer
The galvanometer detects and compares currents too small for an ordinary pointer meter, and its projected spot makes each deflection easy to see on a demonstration bench. It fits Class 12 current-electricity and induction topics, B.Sc. electrical measurement practicals and polytechnic instrumentation labs as dependable physics lab equipment in India.
- Class 12 physics: null detection when balancing the Meter Bridge or Wheatstone Bridge With Pencil Jockey, using the centre-zero scale to see which side of balance the jockey sits.
- Class 12 electromagnetic induction: showing the brief current induced when a magnet moves in and out of a coil.
- B.Sc. practicals: finding current and voltage sensitivity with a Decade Resistance Box, Dial Type in series or as a shunt.
Engage the lock before moving the instrument, and begin on the x0.001 step so an unexpected input cannot drive the spot off scale.
Standard Scope of Supply
The Galvanometer EDSPOT is supplied as one instrument, with its taut-suspension movement, lamp unit and millimetre scale built into the housing and the lock, zero and sensitivity controls on the front. Connecting leads, resistance boxes and bridge apparatus are separate items and can be listed on the same quotation.
Packing, MOQ and Lead Time
Quotations can cover one galvanometer for a demonstration bench or several for a full B.Sc. electrical laboratory. As a physics instruments supplier in India, Science Lab Supplies sets out the packing, delivery time and price for the requested quantity on every quotation, and bridges or resistance boxes can share the same quote.
Holding an Importer-Exporter Code, Science Lab Supplies is able to ship to buyers in Iraq, Nigeria, Kenya, Ghana, Ethiopia and Tanzania. To start an enquiry, write through the contact page, add the item to the enquiry cart, or see the lab tender page for institutional tenders.
Frequently Asked Questions
What do the two scales on the Galvanometer EDSPOT show?
The front scale is graduated in millimetres two ways: 0 to 18 cm with zero at the left for one-direction readings, and 9-0-9 cm with zero at the centre for currents that can flow either way, as in bridge balancing.
How do the sensitivity steps work?
Range attenuation gives four steps: x1, x0.1, x0.01 and x0.001. They scale the current and voltage sensitivities together while the input resistance stays constant, so readings taken on different steps can be compared directly.
Does the galvanometer need a mains supply?
Yes. It is mains operated and rated for 220 to 240 V AC at 50/60 Hz. Confirm that this matches your laboratory supply before ordering, and keep the mains lead clear of wet benches and water baths.
Who supplies the Galvanometer EDSPOT?
Science Lab Supplies supplies this galvanometer from Ambala, India. It can be quoted on its own or together with meters, resistance boxes and bridges, and the institution receives one item-wise quotation for everything it asks for.
Related Galvanometers and Electrical Measurement Apparatus
These galvanometers, meters and resistance items cover the detection, sensitivity and bridge experiments in which a light-spot galvanometer is used, from moving-coil meters to resistance boxes, and any of them can be added to the same quotation as this instrument.
- Laboratory Spot Reflecting Galvanometer — detects small currents through a reflected light-spot indication.
- Ballistic Galvanometer — mirror coil on a long suspension, in 100 Ω and 500 Ω versions with a 12 s period.
- Tangent Galvanometer — coil with 2, 50 and 500 turns on a non-magnetic base, with compass box.
- Galvanometer — centre-zero range of -500–0–500 µA in a sloped desk-stand case.
- Galvanometer 30-0-30 mA — moving-coil meter with colour-coded 4 mm sockets, 125 x 80 x 80 mm.
- Resistance Box — decade dials, 1 W per step, resistors within 1% (0.1 steps within 5%).
Browse the full Lab Meters range, the Electrical and Electronics range for bridges, rheostats and resistance boxes, or all physics lab equipment.
Last updated: 9 October 2026
