The disclosed invention is an instrument for measuring posture in a patient. The instrument comprises a measuring instrument, further comprising a perpendicular member mechanically coupled to a fixed marker and a sliding marker. The fixed marker and the sliding marker can mark a poster instrument. The poster instrument is mechanically coupled to right side banner track which is mechanically coupled to three track screws, a left side banner track which is mechanically coupled three track screws and an upper banner track, which is mechanically coupled to an upper track screw. An examiner can utilize the measuring instrument to mark the poster instrument and maneuver the track screws to determine difference in measurements at head, shoulders, iliac crests, and vertical head measurement in a repeatable and consistent manner.
