One yard of heat and half of it's within ±2°F Lindberg Hevi-Duty divides the cham ber into three heating zones. Boosting input to the end zones balances heat loss so the center—or half the chamber —stays uniform within +2°F. Precise t i m e - p r o p o r : i o n i n g control automatically holds the t e m p e r a t u r e within ± 2 ° F of setting. The controller m o u n t s under the f u r r a c e — o r it can
be used as a remote unit. With three-zone control, you can also b u i l d a t e m p e r a t u r e g r a d i e n t . Just operate one end zone cooler and the other hotter. Using the furnace is easy, too. Swing open the split chamber like a door to place tubes, watch work in progress or speed up cooling. LINDBERG
HEVI-DUTY
Choose from 12 chamber sizes (2Vi" ID χ 24" L to 7" ID χ 36" L) for heating to 1850°F or 2200°F. All operate vertically or horizontally. Want to know more—about this or others in our broad line of precision laboratory h e a t i n g e q u i p m e n t ? See your laboratory supply dealer or write to us in Watertown, Wisconsin 53094.
SB
O T H E H DIVISIONS: A N C H O R ELECTRIC · E N G I N E E R E D C E R A M I C S . HEVI-DUTY ELECTRIC · N E L S O N ELECTRIC . SOLA ELECTRIC See ACS Laboratory Guide for All Products/Sales Office Circle No. 58 on Readers' Service Card VOL.
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