Experimental engineering and manual for testing (1903)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & sons; [etc., etc.] · leaf 94
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… … The Strohmeyer Exten-someter. il §8i.] TESTING-MACHINE ACCESSORIES, 107 l\ 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
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