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NEW IMPROVED
ROLLER-SMITH PRECISION BALANCE 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.
These are but a few of the thousands of operations performed daily by Roller-Smith Balances. Defects difference in weight of anesthetized insects before and after eating. (Biological Laboratories!. 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.
Instrument
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 Mills).
Division
ROLLER-SMITH CORPORATION 1825 W E S T M A R K E T STREET BETHLEHEM, PENNSYLVANIA
Since 1908—producers of high quality electrical instruments, aircraft meters, rotary switches, relays and precision balances. For further information, circle number 19 A on Readers' Service Card, page 47 A
V O L U M E 2 6, NO. 1 1 , N O V E M B E R
1954
19 A
