Upgraded Version: GIMYUAN 48 Thread Chekcer covers the 24 most common imperial threads and 24 metric threads (Metric: from 2mm x0.4 to 24mm x3.0; Imperial: from 4-40 Coarse to 1-12 FINE), and can also identify the O.D. of 8 imperial drill bits and 8 metric drill bits
Separate Metric & Imperial Plates: Easy to hold in one hand and identify threads anywhere. External threads on studs and internal threads on plates help you quickly identify nuts, washers, bolts, screws and more. An essential thread sorting and collecting tool
Friendly Design: The four corners are rounded, and the included hanging holes are convenient for hanging on the wall as decoration. The foot pads can be installed on the back and place on the desktop for use. All studs are neatly fixed on the board, arranged from small to large, avoiding the trouble of confusion and loss
Made of All Metal: The studs of the Nut and Bolt Thread Checker are made of high-quality steel, and the solid plate (thickness: 0.2"/5mm) is made of lightweight aluminum alloy for long-term use. The plate surface is anodized and permanent text markings are clearly readable on the red plate