• Professional height rod is ready to mount to a wall for convenient and accurate measuring • Use with any Health O Meter Professional Scale • Laminated scale on rod measures heights from 24 to 83 in 1/16 and 1mm increments • Lock the measuring arm with natural of the tension of the height rod • The measuring arm will not move unless you adjust it • Lightweight rod is made of plastic and includes a hardware kit so you can mount it easily to a wall