Calculator adds a working craftable calculator into Minecraft. Useful for figuring out power outputs/inputs, rotarycraft power..etc
Crafted using 3 glass panes across the top row, and 6 stone buttons filling up the middle/bottom rows.
Credits:
Thanks to zmaster587 for helping with textures and GUI alignment. http://minecraft.curseforge.com/members/zmaster587
Thanks to Boann for creating a String math expression calculator. http://stackoverflow.com/users/964243/boann
