Tools Botou flat feet, including Prudential, the bridge-shaped flat feet, parallel to the flat-foot, rectangular, square foot, angle square foot square foot for the machine tool and special guide, checked the accuracy table, the geometric precision of measurement, the measurement precision parts , scraping processing technology, is a precision measurement of the baseline. Rectangular device including the feet, bending plate special tools for machine tools, machinery equipment and spare parts vertical testing, installation processing location, such as the machinery industry, crossed vertical measurement tool, which is characterized by high accuracy, stability and easy maintenance. V-rack shaft parts for precision testing, marking positioning platform for measurement purposes is an important auxiliary tool for three-dimensional crossed fitter, mechanical parts parallelism, squareness and a variety of measurement and position errors test (flat measurement important aids).