Hidden rod device

The invention provides a hidden rod device, relates to the technical field of measuring equipment, and aims to optimize a hidden rod structure to a certain extent and improve the measuring efficiency. The invention provides a hidden rod device. The hidden rod device comprises a hidden rod main body, a cursor assembly and a scale part, a tip part is formed at one end of the hidden rod main body, and the scale part is arranged along the length direction of the hidden rod main body; the cursor assembly comprises a first cursor assembly and a second cursor assembly, the first cursor assembly and the second cursor assembly are both arranged on the hidden rod body, the first cursor assembly is located at the position, close to the tip, of the hidden rod body, and the second cursor assembly is located at the position, away from the tip, of the hidden rod body relative to the first cursor assembly; and the second cursor assembly can move in the direction close to or away from the first cursor assembly. 本发明提供的一种隐蔽杆装置，