Sonometer Apparatus
Product Code : SCL-PLE-11770
Quick Answer: The Sonometer Apparatus is a wooden sound box with a 100 cm millimetre scale, two movable knife-edge bridges, a pulley and a tuning peg, used to study the laws of transverse vibration of stretched strings. A weight hanger and slotted weights set the tension.
Last updated: 18 October 2026
Key Features
- Polished seasoned wooden resonance box, approx. 1 m long.
- 100 cm scale with millimetre graduations for placing the bridges.
- Two movable knife-edge bridges set the vibrating length.
- Low-friction pulley at one end and tuning peg at the other.
- Takes steel, brass and copper wires; wires of several gauges are supplied.
- Weight hanger and slotted weights included.
Technical Specifications
| Specification | Value |
|---|---|
| Sound box | Polished seasoned wood, approx. 1 m long |
| Scale | 100 cm, millimetre graduations |
| Bridges | Two movable knife-edge bridges |
| Tensioning | Pulley at one end, tuning peg at the other |
| Wires | Steel, brass, copper; multiple gauges supplied |
| Load | Weight hanger and set of slotted weights |
How It Is Used
A wire is fixed at the peg, run over the bridges and pulley, and loaded with slotted weights. A sounding tuning fork is pressed on the box and the bridge spacing adjusted until the wire resonates. Repeating with different lengths, tensions and wires lets students check Mersenne’s laws on this sonometer for the physics lab.
Frequently Asked Questions
Which wires can be used on the Sonometer Apparatus?
Steel, brass and copper wires. Wires of multiple gauges are supplied with the apparatus.
How is the vibrating length set on the Sonometer Apparatus?
Two movable knife-edge bridges are positioned against the 100 cm millimetre scale.
Related Physics Lab Equipment
See the full physics lab equipment range, or these related sonometer and vibration items:
- Step Down Transformer (For Sonometer Experiment)
- Electromagnet for Sonometer
- Tuning Fork Set of 8
- Steel Wire (100gm)
- Melde's Apparatus
For a quotation on the Sonometer Apparatus, contact JLab India on +91-8569909696.
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