Description

This is designed to determine the modulus of rigidity of a material by measuring the angular displacement caused by a known torque. Searle’s pattern, has two cast iron feet with three through holes and grub-securing screws separated by two supporting rods. The front foot has a wheel with a diameter of 165 millimeters and is mounted on a spindle that carries a split collect chuck for holding one end of the test rod, which is 55 centimeters long and 5 millimeters in diameter. The other end is supported by a clamping block through the rear foot. With two aluminium scales graduated 30-0-30 in single degrees, mounted on pillar plated bar 1 metre long, resting on the knife edges of 2 heavy supports, which are adjustable along the rod, two pointers clamp for attaching to specimen, one each of Brass and Steel with micrometer or spherometer attachment and with electric rods , cord and hook for carrying masses but without weights.