THE BECK £ BINOCULAR 
(‘PATENT) 
NOT ONLY AN ADVANCE 
ON PREVIOUS BINOCULARS 
BUT BETTER THAN A 
MONOCULAR WITH ALL 
POWERS. 
1. Resolution equal to that of a 
Monocular. 
2. Equal illumination in both 
eyes. 
3 Short tube length making 
Microscope compact. 
4. No special 
object glasses or 
eye-pieces re- 
quired. 
5. Standard angle 
of convergence. 
6. Binocular vision 
saving eyestrain 
and giving 
better results 
than Monocular 
vision. 
7. Converted into 
a Monocular by 
a touch. 
Full descriptive Catalogue forwarded on application 
R. & J. BECK, Ltd., 
68 CORNHILL, LONDON, E.C.3 
Read “The Microsope.” A simple handbook, by Conrad Beck, 2/6, post free 2/10. 
