About This Item: -It can be used to accurately measure the position of stamps and eccentric holes. The height and depth of the hole are adjustable to achieve accurate positioning. -Made of high-quality 6061 aluminum alloy and precision hardened steel, high-precision CNC processing, anodized surface, with extremely high strength and service life. -There are precision scales on the body, laser etched, very suitable for maintenance, DIY, etc. -Corner joints, edge or end joints, T and L joints, etc. can be completed quickly and accurately, improving work efficiency. .