The CROM Basic (Cervical Range of Motion Instrument) has set the standard for accurate measurements of the sagittal, coronal and horizontal range of motion movements that can be performed by the cervical spine. Using a patented mainframe which is positioned to the nose bridge and the ears, the CROM eliminates location errors, initial head position errors and  tracking errors. The CROM uses a patented rotation unit that allows the patient to be measured in the preferred upright position. The CROM replaces the dual inclinometer method for cervical range of motion measurements