Torque Wrench - Continued
Figure 4-6. Torque Wrench - Angled Extension
When an extension adapter is used as shown in figure 4-6.
Wrench length (inches) measured from the middle of handle to the center of the tang
Extension length (inches) measured from center of socket to center of drive square
Effective lever length
x IA cos a (or measure as shown)
To find torque setting (TT) when desired amount of torque exerted at extension (TA) is known.
= TA X IT
To find torque exerted at extension for a particular torque setting.
Torque Unit Conversion. When checking the specified torque of a bolt, it may be necessary, because of the
torque wrench calibration, to convert torque units from one to another (foot-pounds to inch-ounces). This can be done
readily using table 4-1.