Caliper: Spring-Wire Calipers with a Sliding Loop (Boy Mechanic, 1919)

Quick calipers from one length of spring wire, bent double into two legs, with a loop of heavy wire round the middle that slides along to set the opening. Variable: points turned in to gauge outside diameters, or out to gauge bores. Source: The Boy Mechanic, Book 3 (1919), p. 373. Picture: the book's sketch.

초급

Unknown

안내

Bend the legs

Take about 15 in of spring wire and bend it as in the sketch: a round bend at one end and two legs whose tips turn inward (for outside diameters) or outward (for inside ones).

이 단계의 재료:

스프링강 선1 15 in

필요한 도구:

판금 가위

바이스(만력)

Fit the sliding loop

Fasten a loop of heavy wire round the middle so it slides back and forth along both legs. Sliding it toward the tips closes the calipers; sliding it back lets them spring open.

이 단계의 재료: