Visit our FULL SITE to order Print or eTextbooks * Designed to measure the range of motion in a patients joints. * Measures a full 360 degree range in single degree increments. * Text is large and easy to read * Measures in both inches and centimetres. * Conforms to ISOM measuring standards. * Made of heavy-gauge clear plastic for greater durability. * Measures degree of movement and spinal displacement. * 8 inch size.