Rigidity Apparatus (Searle's Pattern)
Product Code : LSK-EAST-11172
Rigidity Apparatus (Searle's Pattern) (SKU LSK-EAST-11172) lets students find both the modulus of rigidity and Young's modulus of a wire by Searle's method, timing the oscillations of two brass rods joined by a short test wire. It is a standard B.Sc. and engineering physics elasticity practical. The apparatus is built by Science Lab Supplies in its own workshop on Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and quoted directly to colleges, universities, tender contractors and distributors.
Specifications
The rows below list every stated detail of the Searle's rigidity set. In brief, a 30 cm test wire is screwed to the midpoints of two brass rods of about 30 cm that hang from hooks, three test wires come with connecting screws, and the dynamical-method parts add a 15-0-15 cm graduated rod with a circular weight.
| Specification | Value |
|---|---|
| SKU | LSK-EAST-11172 |
| Method | Searle's method (modulus of rigidity and Young's modulus of a wire) |
| Test wire length | 30 cm |
| Rods | 2 x brass rods, about 30 cm long |
| Wire fixing | Wire ends screwed to the midpoints of the two rods |
| Suspension | Rods suspended from hooks |
| Test wires supplied | 3, with connecting screws |
| Dynamical-method weight | Circular weight with thumb screw, fits on the rod |
| Graduated rod scale | 15-0-15 cm |
| Iron rod length | 16 in (about 40.6 cm) |
| Iron rod diameter | 1 in (about 2.5 cm) |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Rigidity Apparatus
The apparatus serves undergraduate elasticity practicals in which one short wire yields two elastic constants. Students time the torsional swing of the rods and then their flexural swing, so the rigidity apparatus suits B.Sc., B.Tech. and diploma physics labs, and any college building up its physics lab equipment in India for properties-of-matter work.
- B.Sc. physics: modulus of rigidity of a wire by Searle's dynamical method, repeated with lengths of Brass Wire (100gm) or SWG Steel Wire (100gm) to compare two materials.
- Young's modulus of the same wire from the period of the rods swinging in a horizontal plane.
- Timing a run of oscillations with School Digital Stopwatches to cut reaction-time error.
Standard Scope of Supply
The set comprises two brass rods of about 30 cm with hooks for suspension, three test wires with connecting screws, the circular weight with thumb screw for the dynamical method, the 15-0-15 cm graduated rod and the 16 in iron rod. A support frame and stopwatch are not part of the set and can be quoted separately.
Packing, MOQ and Lead Time
A quotation can cover a single rigidity set for a demonstration bench or several sets so that every practical group works at once. Science Lab Supplies sets out packing, delivery time and price for the quantity you name, and spare wires or timing equipment can sit on the same quotation.
With an Importer-Exporter Code on record, Science Lab Supplies can ship to buyers in Malaysia, Peru, Egypt, Iraq, Nigeria and Kenya. The business is registered under Udyam as a manufacturing enterprise (UDYAM-HR-01-0014546) and for GST (GSTIN 06ADEPJ0574F2ZU). Send your quantity through the contact page, place it in the enquiry cart, or use the lab tender page for a formal bid.
Frequently Asked Questions
Which constants can be measured with this apparatus?
Searle's method gives the modulus of rigidity from the torsional oscillation of the rods and Young's modulus from their flexural oscillation, both for the same 30 cm wire, so Poisson's ratio can then be worked out from the pair.
How many test wires come with the set?
Three test wires are supplied, each with its connecting screws, so a class can repeat the experiment or compare readings without cutting new wire straight away.
What are the dynamical-method parts for?
The circular weight with thumb screw fits onto the rod, and the 15-0-15 cm graduation lets students set it at measured distances from the centre, changing the moment of inertia in known steps for the dynamical method.
Is Science Lab Supplies the manufacturer or a trader?
It is the manufacturer. Science Lab Supplies manufactures this rigidity set in its Saha, Ambala workshop in India, so each quotation is issued by the maker itself rather than passed on through a reseller.
Related Elasticity and Torsion Apparatus
These elasticity and torsion items measure the same family of constants by static or dynamic methods, so they make a coherent set of practicals for a properties-of-matter laboratory, and any of them can be listed with the rigidity apparatus on one quotation.
- Young's Modulus Apparatus (Searle's Pattern) — two brass frames with self-centring chucks and a micrometer head reading to 1/100 mm.
- Young's Modulus Apparatus (Vernier Type) — 10 cm brass scale with a vernier reading 0.1 mm.
- Torsion Apparatus Searle's Type — 165 mm wheel and two 30-0-30 degree brass scales.
- Torsion (Barton's) Apparatus Vertical Pattern — 900 mm by 5 mm test rod twisted through a torsional drum.
- Torsion Pendulum — 12.5 cm solid brass disc with a matching brass ring.
- Torsion Pendulum (Bridge Type) — tall U-shaped bridge with a split chuck and a 15 cm aluminium disc.
Browse the full Elasticity and Surface Tension range, the Applied Mechanics range for torsion and bending apparatus, or all physics lab equipment.
Last updated: 9 October 2026