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Wheelco ds EIGHT YEARS AHEAD of its industry i n tKe application o£ Electronics. In 193S— WHeelco originated the "Electronic Principle9' of temperature control. The "Electronic Principle" Control System revolutionized temperature control instrumentation and continues to provide a statndard of control that i s closer, faster an<l more accurate than possible wi th any other principle.
The "Electronic Principle" is an all electric, Xiigh frequency control system that effecrts instantaneous and complete control. The design simplicity of this system eliminates the faults inherent in all mechanical type controllers, which
employ intermittent contact type mechanisms. Faster and more accurate control i s made possible by the instantaneous action and freedom from all interlocking between the indicating and control sections.
Wheelco "Electronic Principle" Controllers Have unlimited application for measuring — recording or indicating — and controlling temperatures. They are available with Proportioning Control or Program. Control.
Wheelco will continue to perform electronic miracles — years ahead of the t imes.
Request Bulletin No. 2.-6200 for complete information on this revolutionary principle and its applications.
851 W. HARRISON STREET CHICAGO, ILLINOIS
Cttixpinxstoi o£ "£leoi>u>*uc P*UMc£pl&" ^ew^esuU+<Ae. Co+UteUd.
V O L U M E 21, N O . 1 2 » » » J U N E 2 5, 1 9 4 3 985
Wheelco REVOLUTIONIZED
TEMPERATURE CONTROL with . . .
SH ISek H C^3 ^^ r^S i " ^ ^ i S * ftf^H IN 1935
Wheelco Instruments Co.
