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 159
Fig. 71.—Buzby Hair-line Extensometer. Y\c. 72.—The RiehlIs Extensometer. instrument the disk is made of aluminium, with open spokes,to reduce its weight. To operate this instrument it is only necessary to clampit to the specimen, to adjust the mirror and cross-hair, andthen to revolve the disk by…
Building materials · Machinery
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