Torsion (Barton's) Apparatus Vertical Pattern

Product Code : LSK-AM-11093

Torsion (Barton's) Apparatus Vertical Pattern (SKU LSK-AM-11093) holds a test rod upright in a steel frame and twists its lower end through a drum loaded by scale pans, so the angle of twist can be read at three heights. It serves the statical rigidity practical in B.Sc. physics and engineering labs. As a science apparatus manufacturer in India, Science Lab Supplies makes this vertical pattern at Plot 448, HSIIDC Industrial Area, Saha, Ambala, and supplies institutions, contractors and distributors without intermediaries.

Specifications

A steel frame on a heavy cast iron base with levelling screws carries the rod under test. Its upper end is held in a 3-jaw chuck and its lower end in the axis of a torsional drum, which turns when load is placed in the scale pans hanging over two frictionless pulleys.

Applications and Experiments for the Barton's Torsion Apparatus

Barton's apparatus finds the modulus of rigidity of a rod by the statical method: equal loads in the two pans apply a couple to the drum, and the pointers record the twist at chosen points along the rod. It is used in B.Sc. physics, engineering physics and polytechnic mechanics of materials practicals.

• B.Sc. physics: rigidity modulus of a rod by Barton's statical method.
• Showing that the angle of twist grows with distance from the fixed end.

Standard Scope of Supply

The apparatus is supplied complete with the frame and base, the 3-jaw chuck, the torsional drum and pulleys, three test rods, three clamping pointers, three circular scales, strings and two scale pans. Weights are not part of the set and can be quoted separately.

Packing, MOQ and Lead Time

Whether you need one Barton's apparatus or a set for every bench, send the number and a quotation will follow showing packing, delivery time and price for that order. Weights and other mechanics lab equipment in India from our Applied Mechanics range can be combined on the one quotation.

Science Lab Supplies is a registered exporter with an Importer-Exporter Code and is able to ship to buyers in Uganda, the UAE, Saudi Arabia, Oman, the Philippines and Nepal. Enquiries go through the contact page or the enquiry cart, and tender details are on the lab tender page.

Frequently Asked Questions

What size of test rod does the apparatus take?
The rod under test is 900 mm long and 5 mm in diameter. Three test rods are supplied with the apparatus, and each is clamped in the 3-jaw chuck at the top and the torsional drum at the bottom.

How is the couple applied to the rod?
Load placed in the two scale pans pulls on strings passing over two frictionless pulleys, which turns the torsional drum. The couple depends on the load and the drum radius, and the twist is read on the scales.

Is this the same as the Searle's type torsion apparatus?
Both use the statical method, but this model holds the rod vertically in a steel frame with three scales, while the Searle's type is a horizontal bench pattern with two scales and a 165 mm wheel.

Who manufactures the Barton's apparatus?
Science Lab Supplies manufactures it. The vertical pattern is assembled in the company's Saha, Ambala works in India, and buyers receive quotations from the factory with no trading layer in between.

Related Elasticity and Torsion Apparatus

The following items belong with Barton's apparatus on an elasticity bench. They add a horizontal static method, a dynamic torsion method, another rigidity experiment and a mass set for the pans, and each can be listed with this apparatus on one quotation.

• Torsion Apparatus Searle's Type — horizontal bench version with brass and steel rods.
• Torsion Pendulum (Bridge Type) — dynamic torsion with an aluminium disc.
• Maxwell Vibration Needle — rigidity experiment with solid and hollow cylinders.
• Physical Weight Box Of 100gm Iron Chrome Plate — mass set for loading.

Browse the full Applied Mechanics range or all physics lab equipment.

Last updated: 25 September 2026