R. & J. BECK S 
LATEST MICROSCOPE. 
No. 31. LARGE CONTINENTAL MODEL with PERFECT FINE ADJUST- 
MENT, and RACK AND PINION (CENTERING) SUBSTAGE. 
SPECIALLY ADAPTED FOR BACTERIOLOGY & HIGH-POWER WORK. 
WITH 
CABINETS. 
NEW 
1/12 IN. 
OIL- 
IMMERSION 
OBJECT- 
GLASS. 
THE INSTRUMENT 
AS FIGURED, 
TWO EYE-PI 
2/3 IN. AND 1 
OBJECT-GLAS 
WITH IRIS 
DIAPHRAGM 
PACKED IN 
POLISHED 
AHOGANY 
ILLUSTRATED 
CATALOGUE 
ON 
R. & J. BECK, 68 Gornhill, London, E.C. 
FACTORY: LISTER WORKS KENTISH TOWN, N.W. 
