Sonometers
Product Code : SCL-PL-11838
Sonometers (SKU SCL-PL-11838) is a wooden sonometer set for investigating how the pitch of a vibrating wire depends on its length, tension and thickness, with three steel wires, movable bridges, a dynamometer, weights and tuning forks. It suits Class 11 physics, B.Sc. sound practicals and teacher training. The sonometer is a Science Lab Supplies manufacture from Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and the factory deals directly with schools, colleges, tender contractors and distributors.
Specifications
Body size, wire diameters, weights and fork frequencies of the sonometer are tabulated one per row. In short, a 110 x 10 x 8.5 cm wooden body with a 60 cm resonance box carries two 0.4 mm and one 0.8 mm steel wire over three movable bridges, with tension from 500 g weights read on a dynamometer.
| Specification | Value |
|---|---|
| SKU | SCL-PL-11838 |
| Body material | Wood |
| Body dimensions | 110 x 10 x 8.5 cm |
| Resonance box | Wooden, 60 cm long |
| Scales | Included |
| Dynamometer | 1 |
| Steel wires, 0.4 mm | 2 |
| Steel wire, 0.8 mm | 1 |
| Movable bridges | 3 |
| Weights | 500 g + 6 x 500 g |
| Tuning fork frequencies | 512 Hz, 480 Hz, 440 Hz |
| Hammer | 1 |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Sonometer
Students can move a bridge until the wire resonates with a tuning fork, then repeat at other tensions or with the thicker wire. Plotting resonant length against frequency, or against the square root of tension, verifies the laws of transverse vibration of a stretched string.
- Class 11 physics practical: frequency against resonant length for a given tension.
- Class 11 physics practical: resonant length against tension for a fixed frequency, with tension cross-checked on a Set of Spring Force Meters with Different Ranges.
- B.Sc. sound practical: effect of wire diameter, comparing the 0.4 mm and 0.8 mm wires.
- Sound-level comparisons of the plucked wire and forks with a Digital Sound Meter reading 30–130 dB.
Add weights gently and keep faces away from a tensioned wire in case it breaks.
Standard Scope of Supply
Each sonometer is delivered with the wooden body and 60 cm resonance box, scales, a dynamometer, two 0.4 mm steel wires, one 0.8 mm steel wire, three movable bridges, weights of 500 g plus six 500 g pieces, and 512, 480 and 440 Hz tuning forks with a hammer.
Packing, MOQ and Lead Time
Price requests are welcome for a single sonometer or a class set. The quotation lists the packing, delivery time and price for the number requested, and spare tuning forks or other school physics lab equipment in India can be priced on it as well.
Science Lab Supplies, which holds an Importer-Exporter Code, can ship to buyers in Ghana, Ethiopia, Tanzania, Uganda, the UAE and Saudi Arabia. Sound-lab buyers can describe their requirement on the contact page, keep sonometers and forks together in the enquiry cart, or use the lab tender page for a tender.
Frequently Asked Questions
Which tuning forks come with the Sonometers set?
Forks of 512 Hz, 480 Hz and 440 Hz are included, together with a hammer for striking them, so resonant lengths can be found at three different frequencies on the same wire.
Can the effect of wire thickness be studied?
Yes. The set has two 0.4 mm steel wires and one 0.8 mm steel wire, so resonant lengths for the two diameters can be compared at the same tension.
Is Science Lab Supplies the manufacturer or a trader?
Each sonometer is made at the Science Lab Supplies site in Saha, Ambala, India, and the quotation comes from that same manufacturing unit rather than from a dealer buying in from another maker.
How is tension applied?
By hanging the supplied weights, 500 g plus six further 500 g pieces, and reading the pull on the dynamometer, so tension can be raised in equal 500 g steps between readings.
Related Sound and Vibration Equipment
The Physics Lab items below complete a sound bench: more tuning forks, two further string-vibration experiments, an air-column resonance tube, vibrating strips and a sound-reflection set. They cover the same vibration and resonance topics as the sonometer and can be quoted on one enquiry.
- Tuning Fork Set — two 256 Hz forks plus 320, 426.7 and 480 Hz on a resonance box.
- Tuning Fork Resonance Experiment Kit — sympathetic resonance, sound amplification and beat frequencies.
- Melde's String Vibration Apparatus — vibrator blade driven from an external AC source for standing waves.
- Apparatus for Investigating the Change of Frequency of Stationary Waves in a String — wave generator, elastic cord, 50–100 g hooked masses and a pulley.
- Resonance Apparatus Brass Pipe — resonance in air columns and the velocity of sound.
- Resonance Strips Model 7 Metal strips — seven spring steel strips for natural frequency and resonance.
- Law of Reflection of Sound Apparatus — incident and reflected angles of sound on a flat surface.
Browse the full Physics Lab range or all physics lab equipment.
Last updated: 22 October 2026
