Plug Thread Gauges are designed for the measurement of female threads such as those found in pre-tapped holes. Products within this range are available in both Go and No-Go varieties. Other thread gauges in Accu's metrology range includes Ring Gauges for measuring, checking and verifying female threads, as mentioned in our article What Is Metrology?
Metric Thread Gauges
Metric Thread Gauges are available to suit a full range of thread sizes from M1 up to M150 in both metric coarse pitch and metric fine pitch. Both left-hand and right-hand gauges are also available. For more information on ISO metric threads, please see our ISO machine screw thread lookup table.
Imperial Thread Gauges
Imperial Thread Gauges are manufactured to suit UNC and UNF threads from No.1 up to 2 3/4 inches, with both left-hand and right-hand threads available.
Bespoke Thread Gauge
Additional Thread Gauges are available or use with less common thread types such as British BSW and BSF threads, NPT and NPTF pipe threads, and German PG threads. Threa Gauges are even available for the measurement of Trapezoidal Lead Screw threads.