| 摘要 |
A torque adjustable screwdriver having a torque indicator comprises a holding portion including a handle, a spring and a stopper which are received in the handle. An operation unit has a ratchet unit, a rotary rod, an exposed post, and a screwdriver head. The rotary rod is installed within the handle and passes through the spring and the stopper. The ratchet unit has an approximate cylinder shape and one end surface of the ratchet unit is formed as a sawteeth surface. In assembly, the rotary rod is engaged to the teeth of the enlarged end of the rotary rod. A setting unit includes a driving rod, a rotary unit, a resisting unit, and an adjusting cover. The rotary unit is a hollow cylinder with outer threads at one end. An inner side of the rotary unit has the outer threads being formed with teeth.
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