Experimental engineering and manual for testing. For engineers and for students in engineering laboratories (1906)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & Sons; [etc., etc.] · leaf 157
consists of a roller carrying aneedle which is centred with respectto a graduated scale. The rollermoves between side-bars extending toclips which are fastened to each end of the specimen. Thetension between these side-bars can be regulated by a springwith a screw adjustment. The objections to this… … Fig. 69.—The StrohmeyerExtensometer. §8i.] TESTING-MACHINE ACCESSORIES. 12 would say that his experience has covered the use of nearlyevery form mentioned, and none have proved to be superiorin accuracy to that with the double micrometer-screw, and fewcan be applied so readily. 79. Wedge-scale.—The…
Building materials · Machinery
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
