The baseline bubble inclinometer accurately measures complete range of motion * Measurement techniques of the bubble inclinometer have been codified and appear in the AMA guide to the evaluation of permanent impairment, third edition * Place the baseline bubble inclinometer near the joint to be measured: turn dial until scale reads 0; take joint through its range; read range traveled directly from dial * Numerous neck and back measurements require the simultaneous use of 2 inclinometers