Clearly marked scales and thread profiles allow fast identification of common nut and bolt sizes, improving work efficiency and accuracy. Made of high-quality aluminum alloy, this screw measuring gauge is , , and -, offering long service life and easy portability. Precise thread inspection device designed for accurately checking screw, nut, and bolt threads, helping you quickly distinguish metric and imperial standards in daily maintenance or professional work. Designed to cover multiple standard sizes in both metric and imperial systems, this thread gauge is ideal for measuring bolts, screws, and nuts in various applications such as automotive repair, machinery, furniture, and home DIY projects., Manufacturer: Akfldms