Hand tool capable of indicating revolution number

A hand tool comprising:

• a main shaft unit including a central shaft extending along an axis and having a front end and a threaded section, and a tool head sleeved rotatably on said front end of said central shaft;
• an adjustment unit including a pressing block sleeved movably on said central shaft, an adjusting member threaded to said threaded section of said central shaft and rotatable to move said pressing block on said central shaft, and a rotary knob sleeved on and co-rotatable with said adjusting member and allowing for manual operation;
• a first resilient member sleeved on said central shaft between said pressing block and said tool head for biasing said pressing block and said tool head away from each other;
• a handle unit including a handle sleeved fixedly on said central shaft and adjacent to said rotary knob;
• and
• an indication unit including a slide slot formed in said handle, an indicating member disposed movably on said handle and having a guiding projection movable within said slide slot along a direction parallel to said axis, and a revolution number scale disposed on said handle and adjacent to said slide slot, said indicating member being connected to and co-movable with said adjusting member.