Read the time on the clock and learn the Mohs Scale of Hardness. The Mohs' hardness scale was developed in 1822 by Carl Friedrich Christian Mohs This scale is a chart of relative hardness and resistance of the various minerals
The download of this application doesn't contain viruses or any kind of malware. The app is created by Andrei Ionut Apopei and its category is Educational. Google Play displays that Mohs Scale of Hardness Clock is rated 4.5 by its users.
The latest update of this application was launched on Feb 18, 2017 and the tool has been installed by over 10 users. It's free of charge to download the installer of Mohs Scale of Hardness Clock, also, you can read users' reviews on Droid Informer. The app works fine on Android 4.0.3 and higher.