To provide a device accompanied with a stopper for enabling that during use of a measure on a plane, the measure will not fall down upon loosing a hand on a measure case, and that even in the case of a measure not accompanied with a stopper, the measure will not be wound back to the case after being pulled out of the measure.

On the outer surface of both sides of a U-shaped spring sheet material 1 which is formed by warping the bottom of the material inside, a bar 2 which vertically slides is a attached, and a stopper and 3 is fixed to a tip end of the bar 2. On the inner surface of both sides of the spring sheet material 1, an inside sheet 7 which is formed from a frictional material 7 having several grooves as a signal unit and of which both side surfaces can be opened/ closed is provided. A detachable stopper of the pendulum type is provided.