Gauge for detecting distance from chamfer root to hole plane

The invention provides a gauge for detecting distance from a chamfer root to a hole plane. The gauge is capable of detecting the distance from a chamfer root of a hole inside a part to the plane, convenient to operate, and high in detecting efficiency and detecting precision. The gauge comprises a base and support columns and is characterized by further comprising a gauge correcting seat, a gauge correcting block, a measuring pin, a gauge stand and a dialgage. The support columns are fixed on the base. The gauge correcting seat is fixed on the upper end faces of the support columns. The gauge correcting block is supported on the upper end face of the gauge correcting seat. The gauge stand is located right above the gauge correcting block. A stop face of the measuring pin is of a flaring circular platform structure. A measuring head of the dialgage is disposed in an inner hole of the gauge stand. A head of the measuring pin sequentially penetrates through the through holes of the gauge correcting seat and the