AMMCO Tension Indicator Torque Wrench Plate - Size 1F, 175 Ft. Lbs. Capacity

This is a photograph of the identification/spec plate on a vintage AMMCO Tension Indicator, a beam/dial-type torque wrench made by the Automotive Maintenance Machinery Co. of North Chicago, Illinois, U.S.A. The plate states that the tool indicates tension in terms of torque with the dial reading in foot-pounds. It is identified as Size 1F with a capacity of 175 ft. lbs. Patent numbers 2,283,888 and RE. 22,219 are listed, along with a 'Pat. Pending' notation. The tool's rotating dial cover is visible with a graduated window scale showing increments of 20, 40, 60, and 80 foot-pounds; the needle appears to rest near 50-60. Partially legible instructions embossed around the dial bezel describe setting the dial to zero by rotating the cover and turning a button one full turn. The wrench is resting across the bottom end of an engine block (crankshaft main bearing caps and connecting rods are visible below), suggesting it was photographed during an engine rebuild. The photo itself contains no vehicle year, make, or model information, it documents the tool, not the claimed 1989 Ford Probe specifically.