Searle's Apparatus Manufacturer,Supplier and Exporter in India

Searle's Apparatus (Product Code: SCL248/023) is a twin-frame extension-measuring apparatus used to determine Young's modulus of the material of a wire in school and college physics laboratories. Senior secondary and undergraduate students use it for elasticity practicals, where a micrometer head reading to 0.01 mm measures how far a loaded wire stretches. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India, within its mechanics lab equipment range.

Specifications

What Is Searle's Apparatus Used For?

Searle's Apparatus is the standard set-up for finding Young's modulus by Searle's method, a practical that appears in physics practical equipment lists for CBSE and university labs. One wire carries the counterpoise weight and acts as the reference; the other is loaded in steps. As the loaded wire stretches, its frame slides down relative to the reference frame and tilts the spirit level. Turning the micrometer until the bubble is level again gives the relative displacement, which is the extension.

Young's modulus then follows from stress divided by strain, using the load, the original length of the wire, its cross-sectional area and the measured extension. For consistent results, straighten the wire before clamping it in the self-centring chucks, add loads gently, wait a moment before each reading, and record readings while both loading and unloading so any slip or permanent stretch shows up.

What to Specify When Ordering

• Number of Searle's Apparatus sets needed for your practical batches
• Mounting: the ceiling bracket is included; add the Wall Mount For Searle Apparatus if you prefer a wall fixing
• Whether you need extra brass or steel wires beyond the set of two supplied
• Slotted weights and hangers for loading, which are listed as separate items

OEM Manufacturer

ScienceLab, the trading name of Jain Scientific Equipments Private Limited, is the OEM (original equipment manufacturer) of this Searle's Apparatus and builds it at its own licensed factory at Saha, Ambala, Haryana, India. Because you buy from the manufacturer rather than a reseller, questions about spare wires, the counterpoise weight or other replacement parts go straight to the people who make the apparatus; ask us about availability. Colleges, schools, dealers and importers can all order factory-direct. Company background is on the ScienceLab profile page.

Related Physics Lab Equipment

These items complete a Young's modulus practical built around Searle's Apparatus:

• Wall Mount For Searle Apparatus — an alternative to the ceiling bracket for wall fixing
• Hangers with Slotted Weights 500 gm — step loads for the experimental wire
• Screw Gauge — to measure the wire diameter at several points
• Steel Wire — additional test wire for repeat practicals
• Loose Weight — a heavier single load for the later loading steps

More apparatus is listed in the Physics Lab category.

Frequently Asked Questions

What is the least count of Searle's Apparatus?
The micrometer head on Searle's Apparatus reads to 0.01 mm, and one frame carries a vertical scale marked 10-0-10 mm. Together they let students measure the small extension of a loaded wire after re-levelling the spirit level bubble.

What accessories come with Searle's Apparatus?
Searle's Apparatus (code SCL248/023) comes with a ceiling bracket, a counterpoise weight and a set of two wires, one of brass and one of steel. If your practical needs extra wires or matched pairs of one material, mention it when you request a quotation.

How does Searle's Apparatus measure the extension of a wire?
Searle's Apparatus measures extension with its two hinged frames. As the loaded wire stretches, its frame moves down relative to the reference frame and tilts the spirit level; turning the micrometer until the bubble is level again gives the extension.

Does Searle's Apparatus need a separate mount?
Searle's Apparatus comes with a ceiling bracket for hanging it. Labs that prefer to hang it from a wall can add the Wall Mount For Searle Apparatus (code SCL246/022), which is listed as a separate product.

Who manufactures Searle's Apparatus?
Searle's Apparatus is manufactured by Jain Scientific Equipments Pvt Ltd, trading as ScienceLab, as the OEM at its own factory in Saha, Ambala, Haryana, India. Schools, colleges, dealers and importers buy it direct from the manufacturer.

Is a calibration certificate available for the Searle's Apparatus micrometer?
Whether a calibration certificate can be provided for the Searle's Apparatus micrometer should be discussed with us before ordering. Raise it through the contact page so it is addressed in your quotation.

What should a quotation request for Searle's Apparatus include?
A quotation request for Searle's Apparatus should state code SCL248/023, the number of sets, any extra wires or slotted weights, your mounting preference and the delivery location in India or abroad, so the manufacturer can quote everything together.

Request a Quote

Ask for a Searle's Apparatus quotation through the contact page, or add it to the enquiry cart along with wires and weights. You will receive the quotation direct from the manufacturer.

Last updated: 24 September 2026