Gunson Universal Thread Gauge

Gunson's Universal Thread Gauge - 4 piece allows you to measure the thread and diameter or a wide range of bolts.Invaluable for identifying threadsPrecisely manufactured from aluminiumWon't damage fine threadsGunson's Universal Thread Gauge set is an incredibly useful tool. It allows you to measure imperal and metric threads. It also allows the measurement of pipe and spark plug gauges.Fine aluminium construction means these are accurate and won't damage fine threads.Suitable for imperial sizes 5/16" - 3/4", 10tpi-44tpi, metric hread sizes 2.5-22mm and pitches from 0.45mm-2.5mm.