RateFast Dual Inclinometer The RateFast Dual Inclinometer app turns your mobile device into a medical tool for measuring the degrees of spine range of motion (ROM). Features and Benefits Reduces examination time, and improves accuracy over manual methods. Uses the two-location inclinometer technique, as defined in the 5th Edition of the AMA Guides pages 400-421. Automatically calculates the true range of motion using locations at the top and bottom of spinal segments. Priced at a fraction of the cost of manual bubble inclinometers or digital dual inclinometer devices. Camera mode allows you to take measurements from afar. No advertisements. Want to learn how to use the RateFast Dual Inclinometer? Check out our video tutorial. Not sure when to use an inclinometer? Read our blog. Have a question? Want to suggest a feature? Contact us on Facebook or via email, or call us at 707.304.5949. Are you not sure how to use the RateFast Dual Inclinometer mobile app? then you’ve come to the right place.