Synchronous moving device and image measuring apparatus

A synchronous moving device includes: a device body; a movable portion which is provided in the device body; a feed screw shaft which is supported on the device body; a nut member which is thread-engaged with the feed screw shaft; a coupler which couples the movable portion and the nut member; and a cable binder which supports and guides a cable wired into the movable portion, wherein: the coupler includes a first member fixed to the movable portion, a second member fixed to the nut member, and an intermediate member interposed between the first and second members for absorbing deflecting motion of the feed screw shaft; and an end portion of the cable binder on a side of wiring of the cable into the movable portion is connected to the second member through a connection member and moved in synchronization with the movable portion.