All gear-testing machines consist of a basic machine with a sensor/probe and recorder with high accuracy range over the years. These gear-testing machines are found to be in good condition. Prime technologies can undertake total reconditioning of machine to achieve geometrical accuracies if required. Recorder with obsolete electronics gives a number of service problems like costly and rarely available spares and difficult, time consuming and inaccurate evaluation of parameters. The company has developed pc-based system gear-mas i for gear measurement and analysis to overcome these and other disadvantages of recorder based system. This system are suitable for use with gear tester of any make viz., klingelnberg, carl mahr, frenco, maag, david brown, goulder mikron, harbin china, fellows, osaka, hoffler, etc. The gear lead testers provide advantages like comprehensive upgrade utilizing state-of-the-art computer data processing technologies; enhances gear-tester life; menu driven windows based operation; fast and accurate parameter evaluation according to din 3960; low cost; no-problem of service and spares; modification or adaptation of software according to customer`s requirements; and no special and expensive graph recording paper required.