The microscope as shown measures only 4.5-inches in height
The following is extracted from Das
Mikroskop und Seine Anwendung by H.Hager,
The following is an English translation:
Pocket microscopes (French make) have also been on the market for about 10 years, at prices of 12-27 Rmk., but without this being a noteworthy It would be difficult to recognize difference. The neat case (de, Fig. 34) is 12 Ctm. long, 3.5 Ctm. high. Therein lies the small microscope, which lacks nothing except than the fine adjustment mechnaism. The adjustment is done by shifting the tube; it is easy by the way and offers no difficulty. The microscope can be laid down by means of a joint located at the lower end of the stand (g) and the foot (f) placed parallel to the stand. The mirror (s) hanging in a fork is concave and rotatable about its axis. The table (0, which is something very small, has two fixed stage clips. The magnifications reach 50 to 60 times. The images are clear and satisfyingly sharp. Since these pocket microscopes are shown in the factory, so of course there are some less useful copies. Of course you do not have to buy these. A mistake in these pocket microscopes, which are very practical for wandering botanists and naturalists, as well as for domestic use, is the too small object table.