A wall mountable height measuring device to record development of height of a person comprises a board, a pair of vertical slits, at least one linear measurement scale, a horizontal frame and a leveling bar. The board includes a front surface, a rear surface, a left side and a right side. The pair of vertical slits is present at the left side and right side of the board. The horizontal frame can slide along the pair of slits. A middle portion of the horizontal frame includes a cut out. A housing present at the middle portion of the leveling bar is for holding the at least one date stamp. The at least one date stamp indicates the date at which the height measurement was taken.