The Deluxe Inclinometer utilizes a ball technology that reduces the inclinometer's sensitivity to vertical positioning. The Deluxe Inclinometer has a three inch dial that provides readings to one degree. The inclinometer is fluid damped to permit fast, accurate readings without waiting for oscillations to damp out. The Deluxe Inclinometer can be used to quickly and accurately measure upper and lower extremity range of motion measurements as well as lumbar, thoracic and cervical range of motion measurements.