RotaryCraft Handbook
From Project Nakagami
The RotaryCraft handbook is your in game guide to RotaryCraft! The handbook contains useful information on items, machines, gearboxes etc. The handbook also contains useful write-ups on the units, and unit conversions used in the mod.
If for whatever reason you lose the handbook you can make a new book using 6 paper, 1 iron ingot, and 2 redstone dust in the crafting table.