Balance Spring

Spherometer Spherometer for the accurate measurement of the radius of curvature of spherical lenses. Made of brass with a vertical scale of 10-0-10mm. A micrometre scale with 100 divisions

Vernier Calipers Precision • Steel cadmium plated, improved pattern, double scale metric scale graduated to 150 mm. • Inches scale graduated to 6 inches provided with thumb movement for fine adjustment. • Individually packed in velvet lined box.

Weights of brass, Set of five, with hooks on both sides.

Set comprises masses of brass with slots, brass hangers with hook. Fine finish, masses removable and replaceable on hanger. Set of 9 weights, one hanger each of 10 gm. Total weight 100 gm. Set of 9 weights, one hanger each of 25 gm. Total weight 250gm. Set of 4 weights, one hanger each of 50 gm. Total weight 250gm. Set of 9 weights, one hanger each of 100gm. Total weight 1000gm. Set of one hanger 20 gm. three weights 20 gm. Total weight 100gm. Set of one hanger 50 gm, nine weights 20 gm. One weight 10 gm. and two weights 5 gm. Total 250 gm. Spare slotted weights and Hangers 5gm., 10gm., 20gm., 50gm., and 100 gm. are also available.