Navicular Drop Tool by Pat Minervini

This is a tool for the measurement of navicular drop, designed by Pat Minervini.

Pat fabricated a version from wood and has been using it for years to measure his bicycle fit clients at Wheat Ridge Cyclery in Wheat Ridge, CO. This is a reproduction based on drawings he provided.

I'm not really sure how it works -- I modeled this for a co-worker -- so I won't be able to answer any questions about the design, sorry.