Vintage Stewart Warner Electric 0-2500 RPM Tachometer for Hall Scott Motor Company

Date code: M12 (Dec 1944 according to Stewart Warner/Hall Scott data, but not confirmed)

Gauge face diameter: 3-1/4" approx

Mounting hole: 3-1/2" approx

Condition: Used.  Not tested.  Curved lens has no visible scratches.  Needle floats nicely when given a little twist.  Sold as is, no returns.  Bezel appears to have been repainted at some point in gloss black.