Mineralogical Stand II.
Mineralogical Stand II.
| No. 39. | The base and pillar are in one piece, neatly japanned
black. The coarse adjustment is by rack and pinion. The stage is revolving and graduated on the edge into 360 degrees. A pointer indicates its position. The polarizer has stop at zeropoint and also marks at 90°, 180° and 270°. It is held in a spring-sleeve and the substage can be raised and lowered by lateral screw, or may be swung to one side. The condenser is mounted in separate arm above the polarizer and swings out of the optical axis by means of a lever, if parallel instead of convergent rays are desired. The analyzer fits into an opening of the tube above the objectives and can be instantly thrown in or out of the optical axis. There is a slot below the analyzer for the insertion of quartz and gypsum plates. By means of a collar with two centering screws attached to the end of the tube, the objective may be brought into the optical axis. Price of this microscope with eye-piece I with cross-lines, Klein's quartz wedge and gypsum plate, red, I. order | $56.— |
| No. 40. | The same with eye-piece III. and objectives 3 and 5. Magnifications 60-250 | $74.— |
Dissecting Microscopes and Hand Lenses.
