74 NOTE ON SOME PORTABLE MICROSCOPES. 



To pack in case the understage tube is removed, and also the mirror, 

 when by unclamping a small lever the mirror stem and legs 

 fold forward, close up under the stage. Coarse adjustment by 

 rack and pinion, fine by INIessrs. Watson's levev form of the 

 usual pattern. Stage 3 in. x 3 in. The whole instrument 

 when folded packs in a case measuring 8^ X 6 X 3| in., w4th 

 space for objectives and other apparatus. 



Messrs. Watson supply these instruments with any size body 

 to order, so that they may serve as companions, as it were, 

 to larger stands. A rack work substage with centring screws, 

 and also a new form of mechanical stage can be adapted if 

 required. 



The price of this stand, with one eyepiece, is c£5 bs. 



Mahogany case, 15s. ; substage, £2 2s. ; mechanical stage, .£3. 



The firm also makes a Traveller's Microscope on a smaller 

 scale, with folding tripod foot, sliding coarse and micrometer 

 screw fine adjustment, and draw tube. 



The price of this instrument is £2 2s., without eyepiece. 

 Mahogany or leather case, 10s. 



Joum. Qiiekett Mia-oscoijical Club, Scr. 2, I'ol. VIII., No. 48, ApHl 1901. 



