Patent attributes
A height measuring apparatus and a bioinstrumentation apparatus with a height measuring device are provided capable of precise measurement accuracy without being affected by an examinee and being highly convenient to assemble, handle and operate. A height detector (a transceiver and a reflector or a transmitter and a receiver having a communication conformation with a laser or ultra sonic beam) has components arranged in a movable part (a head-contact arm or a movable bar) and in a stationary part (a height measurement unit (base platform) or a fixed bar) of a telescoping height measurement bar such that a communication signal route between the parts is not blocked when an examinee is standing thereon, to obtain a height measurement by detecting the distance between the movable and stationary parts.