It consists of two metal frames connected by a pivoted link which also carries a spirit level. Each frame is 170 x 47 mm overall. The wire under test is held in self-centring steel chuck. An accurately graduated micrometer screw to read .01 mm is fitted on frame. One end of a sensitive spirit level is pivoted to one of the frame, the other end rest on the points of a micrometer screw fitted in other frame. Complete with iron C.P. chucks cast iron ceiling attachment and torsion weight in case.
OPTIONAL
AP-906E Slotted weight
500gm 4 weights + 1 Hanger