L.O.D. Ruler (line of drive)

• The L.O.D square is intended to be placed upon the patient to measure both height and the rotation vectors in the horizontal resultant, in increments of one inch.
• It is handier and easier to use than a tape measure.
• You need one with each adjusting table.

We recommend that you spray all of your plastic instruments with clear water-soluble hair spray. Wash and respray periodically.