Measuring device for parameter of metal plate hole

The invention discloses a measuring device for a parameter of a metal plate hole, relating to the technical field of measurement and being invented to measure the parameter of the metal plate hole precisely. The measuring device for the parameter of the metal plate hole comprises a limiting base, a slide block, a measuring head and a displacement sensor, wherein the limiting base is internally provided with a first hole and a second hole, both of which are mutually connected and coaxial; the aperture of the first hole is greater than that of the second hole; a lug boss which is contained in the first hole is arranged at the sidewall of the top part of the slide block; the sidewall below the lug boss of the slide block is matched with the inner wall of the second hole in a sliding manner; the measuring head with a round cross section is fixed at the bottom of the slide block; the intersecting line of the lengthways section of the measuring head and the side surface of the measuring head is a beeline; the inclu