Full Specification ( Hook Gauge ):
It is made of all brass.
Reading
are taken by scale and vernier. The vernier is mounted on a slide which is adjustable to read upto 0.1 mm. For coarse adjustment a screw is provided at the back of the slide and the fine motion travels about 20 mm. in one traverse by a screw knob provided at the top of the outfit.
(A) 7.5 cm
(B) 15 cm
(C) 30 cm
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