The application can use to converter units, check tolerances, tightening torques. Contains information about threads and cutting data. Development version Languages available: Polish and English. Functional list: A) Unit conversion: - length - temperature - area - angles - pressure - power - mass - flow - light - density - moment of power - speed - acceleration - electric charge - steam pressure / temperature B) Tolerances C) Bolt tightening torques D) Threads E) Cutting parameters