UNI-CAL PS: UNIVERSAL CALIPER WITH PROTRACTOR & SCOLIOSIS ATTACHMENT The new UniCal PS System is composed of two 350 mm T-track bars, which can be linked together to a 700 mm long bar. It can be used for a variety of horizontal and vertical measurements of distances, inside and outside diameters, angles, rotations, torsions and surface assessment of scoliosis. A midline leg with slider is included with a protractor & telescopic extender. Measurements of hip abduction and adduction in supine or standing position, and hip extension & flexion in standing position, can be entertained. Technical details, examples and case supplied with the UniCal PS System. Product ID.ISO UniCal System