Patent ID: 8164009

Claim:
An operating device comprising: a first rotation operation body that is rotated; a second rotation operation body that is rotated and provided coaxially with the first rotation operation body; a shaft that is coaxially connected with the second rotation operation body; a moving body that is provided opposite to the shaft, and is moved in an axial direction in response to rotation of said first rotation operation body; a plurality of engaging units that are provided on one of said shaft and said moving body and are aligned in said axial direction, and have a plurality of concaves or convexes which are aligned at a predetermined interval in a rotation direction of said shaft respectively, the numbers of the aligned concaves or convexes differing from each other in the plurality of engaging units; and an engaged unit that is provided on the other of said shaft and said moving body, elastically biased towards one of said engaging units, and engaged with said concaves or convexes, wherein in response to the movement of said moving body, the engaging unit by which said engaged unit is elastically biased is changed.