Ch. IX] PROJECTION MICROSCOPES ON THE MARKET
3*i
Fig. 176. Model 8 Delineascope Showing the Position of the
Microscopic Attachment for Vertical and for Horizontal
Objects.
(Cut loaned by the Spencer Lens Co.).
This projection microscopic attachment is designed to use with or without
oculars or amplifiers, and for microscopic objectives of all foci from 125
mm. to the highest available. The substage condenser consists of several
lenses which are easily turned in place or out of position. By making a suitable
combination any object and any objective can be used. To enable the opera¬
tor to get the object in the right position in the cone of light there is a rack and
pinion movement moving microscope and stage toward or from the condenser.
This is done by the lower milled head shown. The upper milled head is for
the usual coarse adjustment and a micrometer screw is present for the fine
adjustment (sec also fig. 177).