Patent ID: 7173710

Claim:
An inclination adjusting apparatus comprising: two base members opposing each other, a support part for supporting said two base members such that said two base members are relatively inclinable with respect to each other, and an adjusting part for relatively inclining said two base members with respect to each other while using said support part as a fulcrum; said adjusting part comprising: an adjustment screw rotatably threaded into and held by one of said two base members while projecting a leading end face from said one base member toward the other base member; a sphere-bearing surface provided in the other base member so as to oppose the leading end face of said adjustment screw; a rigid spherical member disposed between said leading end face of said adjustment screw and said sphere-bearing surface; and a holding member for holding said spherical member at a position in contact with said leading end face and said sphere-bearing surface, wherein said holding member holds said spherical member by pressing with its own elasticity; said adjustment screw being rotated in a state where said spherical member in contact with said leading end face and said sphere-bearing surface, so as to change the length of projection said adjustment screw from said one base member, thereby adjusting the relative inclination between said two base members.