A method and apparatus for measuring the spinal distortions of a person with laser sources prior to and after chiropractic treatment of a patient to differentiate between spinal distortions prior to and subsequent to any treatment. The apparatus includes a wall chart having measurement indicia, shoulder and/or pelvic girdle harnesses or frames mounted on a patient and each having means for projecting laser line and/or dot beams onto the wall chart for measuring spinal tilt and torque. A unique protractor is provided to coact with the wall chart and the laser line beam to measure spinal tilt. A laser source for projecting a vertical line beam measures abnormalities in posture by projecting the beam to a side of a patient.