Developed by SIGMA Instruments, the Pro-Adjuster is a “low force” chiropractic tool. The ProAdjuster is an instrument that is connected to a computer that analyzes and evaluates the amount of movement each vertebra has. This is done with the patient in a comfortable, seated position; the chiropractor will “tap” on each vertebra using the instrument for the computer to analyze. After analysis, the chiropractor will be able to visually evaluate the patient based on the readings on the computer which indicate which segments need an adjustment. The ProAdjuster is perfect for the patients who “tense up” in anticipation of an adjustment or for patients who not prefer manual adjustments.