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ROLLER-SMITH PRECISION BALANCE r Featuring increased response and speed and employing Alnico mag nets for damping, the new and im proved R o l l e r - S m i t h Precision Balance is capable of weight deter minations ranging from 3 milli grams to 150 grams, in sensitivities from 2 micrograms to 20 milli grams. Available in a wide selection of models and ranges. Its attrac tively designed die cast case, in gray hammer-tone finish, is now fitted with snap latch doors for easy access.
Mm These a r e but a f e w of the thousands of operations p e r f o r m e d d a i l y by Roller-Smith Balances. Detects difference in weight of anesthetized insects before a n d after e a t i n g . (Biological L a b o r a t o r i e s ) .
Insures quality of drugs a n d antibiotics in the research laboratory. ( Pharmaceutical Manufacturers).
When the quality of your product . . . the success of your research . . . depends upon precise weight meas urements in a m a t t e r of seconds, you can rely on Roller-Smith Pre cision Balances . . . universally ac cepted as the standard for speed, accuracy and simplicity of opera tion. Catalog No. 4540 illustrates and describes all models . . . shows wide selection of pans and acces sories. Write for your copy today.
Counts thousands of tiny screws by weight. (Watch Manufacturer).
Measures accurate powder charge a n d lead slug for match rifle ammo. (Firearm M a n u f a c t u r e r s ) .
Protects quality of women's hosiery . . . determining synthetic fiber size by weight. (Hosiery M i l l s ) .
Instrument Division
ROLLER-SMITH CORPORATION 1825 W E S T MARKET STREET BETHLEHEM, PENNSYLVANIA
Since 1908—producers of high quality electrical instruments, aircraft meters, rotary switches, relays and precision balances. Far further information, circle number 11 A on Readers' Service Card, page 37 A
V O L U M E 2 6, NO. 8, A U G U S T
1954
11 A
