equires 750-^-1000/1=% ( II. X i DRAWINGS /< A- MODELS of a sheet for one or 3 sheets for 4 sections. In thia iita every fourth section in drawing, thus: ist, 2d. and 3dwould be drawn ; then the 5th, 6th and ;th ; 9th, loth, iith.every fourth being omitted. If for the model just considered one… … Fig. 257. Abbe Camera Lucida in connection with Bernhardtboard. The drawing board is adjustable vertically for a great •distance. It may also be elevated toward the tm ■ Fig. The base board is hinged so that microscope and board may inclined together [Zeiss Catalog). It is of course best to use…
Microscopy
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
