Many cars of the 1950s and 1960s came with auxiliary gauges as standard, and of them, a large percentage were produced by Smiths Industries. It’s important to do this before you remove the face of the gauge because the needle is attached to the terminals via the mechanism inside. We perform Concourse Restorations,Conversions, Calibration and Customization of your gauges, Concourse level restoration of speedometers, tachometer, clocks and automotive gauges. Smiths gauge restoration smiths gauge restoration Tachometer Gauge - Triumph & BSA Smiths Replica NEW.