New dîrecfecteiye \feclbrr 20. Portability plus performance. If your applications require a small, readily portable, quiet running, high-efficiency vacuum pump you owe it to yourself to evaluate the VacTorr 20, a new two-stage model from Precision. Simplified, patented design uses miniaturized components . . . less fhan half the weight and only one quarter the size of belt-driven pumps of comparable capacity. Portability: Weighs only 17 pounds. Size is just 414" χ 7" χ 10". Weil balanced for easy pick-up and carrying; unique handle also serves as pump exhaust. Hg ( 5 x 1 0 - 1 Torr) ultimate vacuum. Roughdown of 10 liter chamber to 100 microns in 6 minutes provides fast evacuation of small and intermediate systems. Will back diffusion pump of speeds to 100 liters/second; practical in systems to 10 * ΤΟΗ". ·• Quiet: 75 decibels ("A" Scale) at 3 inches from pump. Minimal
noise level assures low operator noise fatigue, an outstand ing benefit of all VacTorr pumps. Fully equipped: Standard equipment includes gas ballast, oil sight, drain and fill ports, thermal overload protector, line cord with switch, carrying handle, integral bumper feet. Safety: With no external moving parts, the VacTorr 20 meets all known safety standards. Get all the facts from your GCA/Precision Scientific dealer or write to GCA/Precision Scientific, 3737 W. Cortland St., Philadelphia, Charlotte, Atlanta, Cleveland, Chicago, Houston, Los Angeles, and San Francisco.
GCA PRECISION SCIENTIFIC CiRCtE 7 7 O N READER SERViCE CARD
