Patent attributes
A peripheral surface shape measuring apparatus of a roll-like object which measures a peripheral surface shape of the roll-like object such as a magnetic tape bulk roll, comprising a pair of receiving portions on which both ends of a core of the roll-like object are placed, a receiving portion horizontally moving device which moves the pair of receiving portions in an axial direction of the roll-like object, a receiving portion vertically moving device which moves up and down the pair of receiving portions, a position sensor having a probe with a tip urged in a direction of abutting against a surface of the roll-like object to measure the peripheral surface shape of the roll-like object and a sensor moving device which moves the position sensor in the axial direction of the roll-like object.
