Watson's Microscopes. 



Models made exclusively for Baird & Tatlock (London) Ltd 



1356 (with accessories). 



The aim in the construction of these Microscopes has been to combine the qualities and conveniences of the 

 English and Continental types, and a reference to the illustrations will show the manner in which this has been 

 done. 



The Tripod Foot is the well-known English pattern, imparting a steadiness to the whole structure, which is obtained 

 by no other design. No matter to what angle the instrument may be inclined it is always firm. 



The Coarse Adjustment, which is by diagonal rack and pinion, gives a very long working distance between the 

 nosepiece and the stage, enabling low magnifications to be used for lar^e sections, Entomology, etc. 



The Fine Adjustment is effected by a vertical lever, which is entirely free from complicated mechanism. By this 

 means an exceedingly slow and sensitive movement is obtained, one rotation of the milled head moving the body 

 .1 mm., but movements so minute as T Jrr of a turn can be produced, representing .001 of a millimetre, readings 

 for which are obtained on the divided drum attached to the milled head. 



(Continued on page 271, with prices). 



CROSS STREET HATTON GARDE1ST, E- C- f 



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