Sonometer Manufacturer,Supplier and Exporter in India
Product Code : EL-PL-11203
Jlab Export is a leading Sonometer Manufacturer,and suppliers in India
Sonometer (code EL-PL-11203) is a hollow wooden box carrying brass and steel wires over bridges, with metre rules divided in mm so the vibrating length of a wire can be read directly. Students use it to find how the frequency of a stretched wire depends on its length, tension and mass. Model JL283 is made by JLab in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Model | JL283 |
| Body | Hollow wooden box |
| Scale | Metre rules divided in mm |
| Wires | Three, of brass and steel, from a fixed bridge |
| Wire tensioning | Fine adjustment pegs; one wire loaded with masses over a pulley, held by a fixed screw |
| Bridges | Two movable bridges |
| Quality check | Each sonometer is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Product code | EL-PL-11203 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Laws of the Vibrating Wire
A wire vibrating between two bridges has a fundamental frequency f = (1/2l)√(T/m), where l is the length between the bridges, T the tension and m the mass per unit length. Sliding one movable bridge at constant tension shows that frequency falls as the length grows. Hanging heavier masses on the pulley wire raises the pitch in proportion to √T, and comparing a brass wire with a steel one shows the effect of mass per unit length.
Finding Resonance with a Tuning Fork
Rest a small paper rider on the wire midway between the bridges, strike a tuning fork and press its stem on the box. Move a bridge until the rider jumps off: the wire is now in resonance with the fork, and its vibrating length is read from the mm scale. Touching the wire lightly at a half or a third of its length while plucking it brings out the second and third harmonics of the harmonic series.
Related Sound Apparatus
- Tuning Fork Set — eight chrome-plated steel forks of different frequencies for resonance runs.
- Electromagnet with Transformer for Sonometer — electromagnet and transformer made to work with a sonometer.
- Hangers with Slotted Weights — chrome-plated hanger and slotted weight for loading the pulley wire.
- Sonometer — another model, its brass and steel wires tightened by wrest pins.
Other apparatus for school mechanics and sound practicals is in the Physics Lab range.
Request a Quote
Order through Add To Cart, or use the contact page to send the number of sonometers, any tuning forks or weights to go with them, and the delivery address.
Last updated: 26 October 2026
