Bausch & Lomb Optical Co

is woefully inadequate and will remain so for a long time unless a definite corrective program is established. Our national security, our industrial and social prog-.

aluminum analysis methods; payment enclosed, $. ... glass 1o finished product. For further information, circle ;'4th Cover” on Readers'Service Card, page 77 A.

scope forinvestigations by the color transformation technique. It is used to photograph specimens In transmitted ultraviolet and visible light. The spectral region is 250 to 700 m/xand the spectral band width is about 10 m/ . It is possible to make c

Lomb Optical Co.,609-9 St. Paul. St., Rochester 2, N. Y. THE WORLD'S FINEST. LABORATORY ... |_| I would like a demonstration. NAME_. SCHOOL OR FIRM_.

New Dua-rol LOW POSITION Ball-. Bearing and Roller Fine Adjustment— critical focus, easier and faster; less wear, longer life. New Roto-spbere.

ingly important in research and quality con- trol studies.Uses include spectrophotometry, microscope illumination and direct irradia- tion studies. Food industry ...

Dependable quality control is high-speed rou- tine with a B&L Abbe-3L Refractometer . . . and the price is the lowest in the field. You can easily test several samples a minute. Horizontal prism assembly is right up front, loads or wipes in a wink. D

steel analysis methods set; payment (set of 7, $14) enclosed. Send me ... For further information, circle number 14A on Readers' Service Card, page83 A. 14 A ·.

and the price is the lowest in the field. You can ... Horizontal prism assembly is right up front, loads ... I'd like a demonstration of the models checked above.

FOCUSING EYEPIECE adjusts to accommodate in dividual user's eyes. Combined with an easy-to-read internal scale, this helps eliminate guesswork in.