Local length rapid detection device

The invention relates to a local length rapid detection device, which comprises a base station, a support pipe, a dial gauge, a frame body and a servo motor; thedial gaugeis fixedly arranged on the support pipe, and a measuring rod of the dial gauge is inserted into the support pipe; the frame body is arranged on the base table, and a part fixing device is arranged on the frame body; the servo motor is arranged on the base table, a telescopic rod is connected to an output shaft of the servo motor, external threads are arranged on the telescopic rod, and an internal threaded hole is formed in the frame body. Compared with the prior art, the vertical limiting of the to-be-detected part is achieve through the U-shaped frame body and the part fixing device, and the vertical position adjustmentof the to-be-detected part can be achieved through the U-shaped frame body and the fastening part in the part fixing device, so as to adapt to to-be-detected parts of various sizes; the device can beprecisely combined with a