POINTER ATTACHMENT STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a painter attachment structure in which a pointer can be stably and detachably attached to a rotation axis with a simple structure. SOLUTION: In the pointer attachment structure for fitting a fitting hole 12b of the pointer 12 to a fitting projection 11b protruding at the end surface 11a of the rotation axis 11 and locking the pointer 12 by mounting a stop ring 13 to a circular groove 11d provided on the fitting projection 11b, the bottom surface 11f of the circular groove 11d is formed as a tapered surface having a diameter which decreases from a free end side of the fitting projection 11b toward the pointer 12 side. The stop ring 13 presses the pointer 12 to the end surface 11a of the rotation axis 11 by its springness and the tapered surface of the bottom surface 11f of the circular groove 11d.