Physical laboratory experiments : mechanics, optics and heat (1917)
Goodwin, H. M. (Harry Manley), 1870- · Boston : G. H. Ellis Co., Printers · leaf 20
al micrometer-screw ,moving in a nut fixed at the cen-tre of an equilateral tripod. The •head of the micrometer screw A •is a graduated circle, the position ofwhich is read on a fixed verticalscale B graduated in divisions equalto the pitch of the screw. One com- (plete revolution of the screw thus… … —• ^ » ,v,... > 18 PHYSICAL LABORATORY EXPERIMENTS depends on the precision with which one can detect when theend of the micrometer screw just makes proper contactwith the object placed beneath it. In the ordinary formwhere no special device is provided for facilitating thisobservation, the…
Physics · Mechanics
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