2025-01-03 00:00:00 Millimeter is a simple free screen ruler app. You can measure small objects that fit the device screen with this ruler. There are NO ADs in the app for the best experience and real full-screen measurements. ☛ ANY DEVICE can be calibrated for accurate measurements in Calibration Mode, where common standard objects (coins, credit cards, etc) can be used as a reference. You can also customize your app by purchasing extra features or modes.