'HEATING ELEMENT FOR WESTON THERMO AMMETER MODEL 425 No. 96797 CAPACITY 50 AMPERES WESTON ELECTICAL INSTRUMENT CORP. NEWARK N.J..U.S.A.
CAUTION: MOUNT THIS ELEMENT ON A VERTICAL BOARD WITH THE AXIS OF ITS CURRENT TERMINALS HORIZONTAL PATENTED FEB. 21. 1922.'