Overview Reviews Product Description Measure range-of-motion for all major articulations, cervical rotation, lateral flexion of the head and anterior-posterior cervical flexion. Bubble level assures measurement is made on horizontal plane. Two 180? opposing scales in 5? increments. Product Videos Custom Field Product Reviews Write a Review Write a Review × Baseline Baseline Large Joint Protractor Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *