扭矩扳手是一种组装精确、携带方便、实施紧固件装配的手动工具。它广泛用于飞机、船舶、汽车拖拉机、内燃机和各种现代化机床设备行业。扭矩是汽车发动机的重要技术条件之一。扭矩的大小直接影响发动机的使用性能。在生产装配、修理检测发动机的过程中,扭矩扳手既是常用的紧固工具,又是检测扭 Torque wrench is a kind of hand-assembled tool that is accurate and easy to carry and implement the assembly of fasteners. It is widely used in aircraft, ships, car tractors, internal combustion engines and a variety of modern machine tool equipment industry. Torque is one of the important technical conditions of a car engine. The size of the torque directly affects the performance of the engine. In the production of assembly, repair testing engine in the process, the torque wrench is both commonly used fastening tools, but also test the torsion