Abstract: A height measuring instrument includes a measuring box having a right-angled plate; a measuring tape having a scale and a space to record measured data, the measuring tape wounded onto means for winding within the measuring box when in a stored mode, being extended an optional length when in an operative mode; winding means provided within the measuring box and attached to one end portion of the measuring tape so as to wind the measuring tape by handling from the outside; means for marking the measured data on the measuring tape, the marking means being included: a measuring member formed in the shape of a plate and installed into the measuring box such that the measuring member can prevent to loosen and slide the measuring tape in an operative mode by a tension on the measuring tape when in fitting of a length of the measuring tape; a through hole formed on the measuring member and allowing writing goods to pass through therein order to record a mark on the measuring tape; a hole punch having a spring provid