O-Vee's spring gauges allows the easy precise measurement of external threads, taps and gauges.
This is a practical way of measuring screw threads in a production environment.
They are based upon a "3 wire method" which is universally recognised as an efficient and
accurate measure. Each gauge is made to suit a specific thread size.
Gauges are made from heat treated, high tensile steel wire specially selected for accuracy
within British, European and American Standards.