1) The Spine-MasterTM will measure pelvic tilt, pelvic rotation/translation and lean of the spine at a fixed point. 2) The Spine-MasterTM can also be used to measure the width of the pelvis and the stance width at the center of the heels. 3) The Spine-MasterTM Model 751 can also measure weight variation from the left and right side of the body. Our digital bilateral scales are easy to read and are battery or plug in powered. 4) The Spine-MasterTM has a solid, low, easy-step, base for patient comfort. 5) The Spine-MasterTM has easy caliper access from the top or bottom due to your narrow caliper backplate. 6) The Spine-MasterTM has a smooth floating up/down movement of the caliper assembly, making it easy to operate and lock in any location. 7) The Spine-MasterTM has a quick track rack and pinion movement of the caliper and stance blocks, designed for high volume practices. 8) The Spine-MasterTM readings are all taken from the back of the machine. 9) The Spine-MasterTM has a 1 year limited warranty and a 90 day money back return policy.  No questions just crate it up and ship it back at your expense and we will return your purchase price minus any damages. NO ASSEMBLY REQUIRED!!! Just level the adjustable pads until the post mounted level is centered and go to work!