Detection device of dimensions

The invention relates to a detection device of dimensions, and the device comprises a working table, a general assembly frame, a detection platform, a probe detector and a control device, wherein the general assembly frame is disposed on the working table; the detection platform is disposed on the working table, the detection platform comprises a bearing face used to bear a to-be-detected product, and a plurality of positioning pillars raised upwards vertically in the Z-axis direction and a fixed air cylinder separated from the positioning pillars are disposed on the bearing face; the probe detector is disposed on the general assembly frame, and the general assembly frame drives the probe detector to move to the position on the detection platform; and the control device is used to start and control the probe detector so as to detect dimensions of the to-be-detected product. The detection device of the dimensions provided by the invention has the advantages of high detection efficiency, high accuracy and less possibility in wrong judgments.