Sealey Metric/Imperial Nut & Bolt Thread Checker

Designed to accurately measure and identify threads, this tool ensures you select the right fastener every time, whether you are working with fine or coarse threads.
With 14 Imperial (6/32 to 1/2") and 14 Metric (M4 to M14) sizes, this thread checker accommodates a wide range of common nut, bolt and screw sizes, making it very versatile.
Easy-to-read markings, male and female versions of each size are easy to identify.
Includes length checker on either side of board - one edge is Metric and the other is Imperial.
Sizes: Imperial; (6-32C to 1/2-20F), Metric; M4-0.7, M5-0.8, M6-1, M7-1, M8-1, M8-1.25, M10-1, M10-1.25, M10-1.5, M12-1.25, M12-1.5, M12-1.75, M14-1.5, M14-2.
Made from a premium alloy giving a long-lasting performance.
Lightweight and compact, it can be carried to site or stored in a toolbox.
Model No. AK28