Measure instrument of drum groove external diameter and instrument of measurement drum groove internal diameter

The utility model discloses a measure instrument of drum groove external diameter and instrument of measurement drum groove internal diameter belongs to measuring tool, and its structure includes connecting pipe, dead lever, fixes measuring head, connecting sleeve, movable measuring head and push -and -pull rod, the connecting pipe be the loop configuration, dead lever and connecting sleeve are located the both ends of connecting pipe respectively, and the inboard of dead lever is provided with fixed measuring head, are provided with the push -and -pull rod in the quill, the inboard of quill is provided with the movable measuring head who is connected with the push -and -pull rod, movable measuring head the same with fixed measuring head structure, and bilateral symmetry sets up, the push -and -pull rod on be provided with the dipperstick, connecting sleeve and push rod be provided with fastening bolt between drawing, fixed measuring head and movable measuring head be the conical body respectively, its outer terminal surface is the plane respectively. The utility model has the characteristics of adopt the integral type structure, only need can accomplish the measurement alone, it is easy and simple to handle, can realize the multiple metering, measure accuracy etc.