cervical spine ROM measurment

[Richard Dietrich]

Does anyone know of a relatively inexpensive yet valid instrument to
measure cervical spine range of motion including flexion-ext, rotation and
lateral bending. Same question for the lumbar spine. This is to be used
in a clinical setting so must be relatively simple and quick to use.
Has anyone experience with the CROM instument or any less expensive
alternatives?

Richard Dietrich B.Sc.,D.C.