The one end of suspension wire hangs from the Universal Clamp with the help of a chuck nut and another end of wire is clamped to solid bras disc of 12.5cm dia and 1.25cm thick with the help of chuck nut. A heavy metal ring of the same metal (brass) and the same outside diameter as the disc is included. When ring is placed on the disc, the moment of inertia and therefore the period of vibration of system is increased.
Same as above but disc dia 6”.
Consisting of an aluminium disc 15cm diameter. Another small disc of iron C.P. having same diameter, as the interior of a grooved area of the bigger disc (the small disc has approx.8cm dia and 1.25cmthickness). A tall U-shape metal bridge with a split chuck fitted into disc enable accurate suspension and torsion5
Same as above but diameter of aluminum disc is 25 cm (larger size) and another smaller disc of iron C.P. has diameter of 10.5cm and thickness 1.25 cm.
Horizontal bench pattern. Two cast iron feet each with 3 through holes and grub securing screws, separated by 2 supporting rods, wheel 165mm dia, over grove moving in ball bearings, mounted on front foot, with spindle carrying split collect chuck for holding one end of test rod, other end supported with clamping block through rear foot. With 2 brass scales graduated 30-0-30 in degrees, mounted on pillar supports, which are adjustable along the rod, 2 pointers with clamp for attaching to specimen, one each of brass and steel rods, cord & hook for carrying masses but without weights.
Same as Cat. No.AB114 but rods one meter long.
A steel frame mounted on a heavy cast iron base with leveling screws. Upper end of rod (under test) 900 mm length and 5mm dia is clamped by a 3-jaw chuck and lower end is clamped into the axis of a torsional drum which can be rotated by putting load in the scale pan passing over two frictionless pulley. Freely sliding three circular scales graduated in single degrees can be clamped at any position. Three pointers for clamping to the test rod are provided. Complete with three test rods, strings and two scale pans, but without weight.