Torsion Of Metal Rods Apparatus, Searle's

Horizontal pattern, two heavy metal brackets are held together with connected rods. A heavy metal pulley, moving in ball bearings, is mounted on one bracket & is fitted with a three jaw chuck to hold one end of the test rod, the other end being held in another chuck fixed to the other bracket. Two graduated scales are mounted on the connecting rod & two pointers can be clamped in any desired position on the test rod, with one brass & one steel test rod but without masses.