These calculators have been developed to help in the Setting up, Production and Checking of the gears available via the Ultrascale web site. Three of the main types of gears are covered, these are Worm gears, Helical gears and Spur gears. The flow of the app has been setup in such a way as to allow for the calculators to be used on a individual basis, using minimal information to output the basic data required, or as a complete process flow from start to finish. For example, starting at the worm then creating a matching worm wheel and then to output the base tangent data to allow the gear to be checked.