Measuring device

The invention provides a measuring device, which comprises a positioning column and a measuring assembly; two measuring mechanisms of the measuring assembly rotatably sleeve the peripheral side of thepositioning column, each measuring mechanism comprises a sliding arm group, the sliding arm group is movably arranged along the tangential direction of the positioning column, and the sliding arm group has a storage position and an extension position; when each sliding arm set is located at the extending position, the first stopping end of one sliding arm set of the two sliding arm sets abuts against a first to-be-measured object, the second stopping end of the sliding arm set abuts against a second to-be-measured object, and the first stopping end of the other sliding arm set of the two sliding arm sets abuts against a third to-be-measured object, and the second stop end of the sliding arm group abuts against the fourth to-be-measured object. According to the invention, the problem of tedious measurement procedu