Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 136
Mr. Jacksons Eye-piece Micrometer. B … as to have a slight motion towards either end; one of itsextremities is pressed-upon by a small fine milled-headedscrew which works through the frame, and the other by aspring (concealed in the figm^e) which antagonizes the screw.The scale thus mounted is introduced through a pair of slitsin the…
Microscopy
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![An illustration from Catalogue des monuments et inscriptions de l'Égypte antique / publié sous les auspices de S.A. Abbas II Helmi par la direction générale du Service des antiquités [de l'Égypte] ; par J. de Morgan, U. Bouriant, G. Legrain, G. Jéquier, A. Barsanti (1894)](https://img.insideoutlibrary.com/img/200/ia-cataloguedesmonu21egyp-161-267.webp)
