Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 532
f the stone; the bed is made <>! the toughest ash plated svith iron, with iron PROJECTION. 525 runners, which n;n or. Hers; the tympan-frame is wrought-iron, with st etching the tynipan. The larger sizes are t to take an impi from the largest Btone with e Copperplate-press.—IIS. The… … PROJECTION Proj ai ins in which the eye ia .supposed to be placed in r ■■■\ which it is to 1 I; but there are three which, I ■: the frequency of their use, arc particularly <i on, namely tin- trlh 1. Orthograph —In this projection the eye is supp sed to be at an infinite distance, and the plan*…
Mechanical engineering
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