Needs option to measure inches in mm. – Ruler HD - Accurate length measuring instrument Review

This is a beautiful app! It would be wonderful if you had an option in settings where it not only compared inches to centimeters, but also inches to millimeters. Certainly, it could be figured out from centimeter ruler, but it would be nice to have it showing specifically on the screen if you are working with jewelry. Thank you.
Review by i-nerd on Ruler HD - Accurate length measuring instrument.