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"The
Versatile
Desiccant"
FOR DRYING
and F A D
Air, Industrial G a s e s , Organic Liquide and Solrente, Refrigerants, Biological Serums, Food Products, e t c Write for
OF MATERIALS
Bulletins
W . A. H A M M O N D DRIERITE CO. 120 Dayton Ave.» Xenia, Ohio
Jlet PETERSON C*f>e*U FUNCTION FOR YOU
ATLAS T W I N - A R C WEATHER - OMETER • · · twice the speed of single a r e machine Faithfully duplicates the combined w e a t h e r i n g effects of s u n l i g h t , r a i n , heavy dew and thermal shock; acceler ated to reduce years of actual weathering to a few days of testing. T h e new Twin-Arc Weather-Ometer is equipped to take large size specimens in order to meet the new Federal Specifications de manding accelerated weathering tests. Full automatic control of light and water periods is provided by the Atlas cycle timer unit which can be set to meet standard and special requirements of weathering tests. A direct reading thermal regulator, automatic shut-off switch and a running time meter are includ.ed as standard equipment. After setting exposure cycles o n the control panel, the .Weather-Ometer can be safely left in continuous operation over night without attention except to replace carbons once in 24 hours. T h e Atlas Weather-Ometer proves the durability of materials under exact conditions of weathering found in actual use in out- ' door exposure.
ATLAS FADE-OMETER The recognized standard testing machine for de termining the fastness to light of any material or finishes. Specimens are rotated around the Atlas En closed Violet Arc — the closest approach to natural sunlight — in masked holders. Automatic temper ature control to within zt3° F. and humidity regu lated by a constant reservoir according to require ments of tests. Operation is completely automatic without attention from operator; can be left in con tinuous operation overnight.
For half a century, Peterson has studied the requirements of labora tory workers from the changing technique emanating from the class room to the last word in actual work ing conditions. You'll find the advice of our experts in keeping with our reputation for quality furniture and national recognition. Your inquiry involves no obligation.
LEONARD PETERSON & CO. INC. 1222-34 FULLERTON A V E . CHICAGO 14, ILLINOIS VOLUME
2 2, N O .
15
* Originators and sole manufacturers of accelerated testing devices for a quarter of a century. The Atlas FadeOmeter, Weather-Ometer, Launder-Ometer are the accepted standard accelerated testing machines all aver the world.
ATLAS ELECTRIC DEVICES CO.
» » AUGUST
361 W e s t S u p e r i o r S t r e e t , C h i c a g o ίΟ, Illinois
10,
1944
1325
