| 摘要 |
A device for setting and transferring film speed value to an exposure meter in a camera, of the type employing a movable rod adapted to assume different axial positions corresponding to different film speed values, comprises a movable stop member located adjacent one end of the rod for defining the axial position of the rod. The position of the stop member is in turn controlled by a rotatable cam curve having a uniform pitch between its lowest and highest points, and a difference in height between said lowest and highest points sufficient to vary the position of the movable stop member through a total distance corresponding to the film speed range of the exposure meter.
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