3
43012
For accurate operation, grasp the knurled handle only and apply force. When the desired torque setting is reached, you
will hear and feel a click. This signifies that you have reached the desired torque. Continuing to press on the wrench
after click sounds will cause over torquing and can lead to undesired effects. WARNING: At low torque settings, the
click sound can be very subtle. Pay close attention while operating.
1. After setting desired torque. Install proper socket to the square drive. Place socket on the nut/bolt to be tightened.
2. Operate torque wrench the same way as a standard ratchet when tightening a nut/bolt. As nut/bolt becomes
tightened, slow force of operation, press smoothly. WARNING: Operating the wrench too quickly and with too much
force can cause you to miss the exact torque setting.
3. At the moment the wrench clicks, the torque setting has been reached. Stop applying force to the wrench
immediately and release pressure. Do not continue to press once torque setting is reached. Doing so will overtighten
the nut/bolt and could cause damage. Once pressure is released from the handle, the wrench will automatically reset
and is ready for next use.
WRENCH OPERATION
(Example: Setting to 57 ft/lbs)
1. Locate locking collar above the knurled handle. Unlock knurled handle by pulling down on the locking collar and holding
down while turning handle to desired torque setting. Release locking collar to engage. (Fig. B)
2. MAIN SCALE ADJUSTMENT (Fig. C) Using ft/lbs scale, turn knurled handle until its top edge is level with the
horizontal “55” mark on main scale and the “0” mark on micrometer fine scale is centered on vertical line of main scale.
3. FINE SCALE ADJUSTMENT (Fig. D) The micrometer scale divides the main scale markings into 10 divisions. Every
micrometer scale marking equals 0.5 ft/lb, To increase torque from 55 to 57, turn knurled micrometer handle clockwise
until (Mark "4" = 2.0 ft/lbs) is centered on vertical line of main scale. 55 ft/lbs (main scale) + 2.0 ft/lbs (micrometer scale)
= 57 ft/lbs. (Reference Fig. E)
4. Lock torque setting by releasing the locking collar and engaging the handle. Check that the Micrometer handle is
engaged by trying to turn handle with locking collar released. If handle does not turn than the wrench is now set to
measure 57 ft/lbs of torque and ready for use.
* For setting desired torque on Newton Meters (Nm) scale, the Nm scale uses the same procedure described above for
ft/lbs scale. The micrometer scale divides the main scale markings into 10 divisions. Every micrometer scale marking
equals 0.67 Nm, also known as the minimum increment. NOTE: Marked Value Increments are in In/lbs.
Fig. E - Micrometer Marking Scale:
Mark 0
0
55
1
0.5
55.5
2
1
56
3
1.5
56.5
4
2
57
5
2.5
57.5
6
3
58
7
3.5
58.5
8
4
59
9
4.5
59.5
Value
increment
