I have a "Machinery's Handbook" on my desk where I do all my design work. I have a "Production Handbook" right next to it. Out in the shop I also have "The Pink Book." "The Pink Book," is a three ring binder with a collection of drill sizes and tap information, gage charts, materials hardness, plastics recipes, and anything I have found myself having to refer to the chart or table more than once while working. That reminds me. I should probably add a sine bar table to the pink book. Its in my, "Machinery's Handbook," but the, "Machinery's Handbook," never goes out into the shop.