Thread Gauge

Thread plug gauges

Type of gauge (Thread plug or Thread ring)
Thread series (i.e. Metric, Unified, etc.) or thread angle
Diameter & pitch/TPI of the thread
Direction of thread (Right hand or Left hand) (Assumed Right hand if not specified)
Tolerance class
Lead or number of starts (Assumed single start if not specified)

Thread Plugs (1 mm to 400 mm)
Thread Rings (1 mm to 360 mm)
Taper Thread Plugs (1/16 inch to 10 inch)

Taper Thread Rings 1/16 inch to 8 inch