WATSON'S MICROSCOPES 



AND ACCESSORIES 



Watson's Microscopes are appreciated by all who use them, 

 because of their accuracy and comfort in working. Every detail of construction 

 has been carefully considered, with a view to attaining the maximum of 

 eilSciency with the niiiiimum of complication. Every micposcope is 

 guaranteed for five years, but lasts a lifetime. 



SPECIAL FEATURES OF 

 WATSON'S MICROSCOPES. 



Stands are designed to give a maximum of 

 rigidity. 



" Built-in " mechanical stage, giving maximum 

 efficiency with long range of movements. 



Lar^e diameter body tube, for photo- 

 micrography. 



Compound focussing and centring substage. 



BRITISH MADE 



Watson's "Versalic" 1/12 inch oil immersion objective 



combines many advantages, includmg an unusually flat field, an exceptionally 

 long working distance, and an immovable front lens. 



War Price £6 : 5 : O, including oil bottle and immersion oil. 



Watson's 1/6 inch semi-apochromatic objective, like the 

 Versalic, combines a very flat field wiih a long working distance (1 mm,) 

 li is highly recommended by the leading author ities. War Price £2 : : O. 



Watson's BRITISH MADE H/EMACYTOMETERS, with 

 Thoma rulings and two [jipettes, can be supplied from stock. 

 Price £2 : 2 : O. 



Microscopic Objects. Catalogue No. 3 gives full details of 

 Watson's stock, which is the largest in the world. Post free on request. 



W. WATSON & SONS, LTD. 



[ESTABLISHED 1837] 



313 High Holbopn, London, W.C.I. 



optical Works: HIGH BARNET, HERTS. 



