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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.
Utangiye
Unknown
Amabwiriza
1
1
Bend the legs
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).
Ibikoresho by'iyi ntambwe:
Insinga y'icyuma cya kamani1 15 inIbikoresho bikenewe:
Ibyuma bikata ibyuma bisanzwe
Ifatiro ry'Ameza2
2
Fit the sliding loop
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.
Ibikoresho by'iyi ntambwe:
Urusinga rw'icyuma1 heavy wire loopIbikoresho bikenewe:
Ibyuma bikata ibyuma bisanzweIbikoresho
2- 1 15 inUmwanya
- 1 heavy wire loopUmwanya
Ibikoresho bikenewe
2- Umwanya
Iki gishushanyo gikora
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