The technical testing of yarns and textile fabrics (1920)
Herzfeld, J. (Jacob), b. 1859, Nisbet, David Thomas · London : Scott, Greenwood · leaf 22
ing. It is necessary to have the paper on a level with the microscope stage. Ap- paratus with this object have been designed by Wollaston, Nobert, Somering and others, those in the appended illus- trations being, respectively, the camera lucida and the Abbe apparatus. To obtain pictures free from… … FIG. 7. — Abbe's drawing apparatus. , glass micrometer, a fine scale engrave'd on glass. The measurement is performed either on the object itself (objec- tive micrometer) or on the image (ocular micrometer). The former consists of a glass slide on which is engraved a mil- limeter graduated into 100…
Textile fabrics -- Testing
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