ainment rigging (theatre and arena) calculations and makes them easy to understand. It also provides hints for remembering many rigging formulas. It is a great resource for anyone studying for either ETCP rigging exam, and includes an explanation of the equations found on the ETCP Certified Rigger - Formula Table. This edition has a great deal of reference information for entertainment riggers of all types, and links to download Excel workbooks to assist with complex rigging calculations.