# Correction Coefficients for Extensions

When the joint design or space limitations preclude the use of standard sockets or tools, it may be necessary to use special extension spanners to fit the application. In these cases, the STRwrench measurement can be adequately compensated since the factory calibration is made for the standard arm, and the extension arm increases the torque measured proportionally to its length. The angle measured could also be affected by the extensions, due to its specific torsion when torque is applied.

When a torque multiplier is used on the STRwrench, the torque applied on the joint is greater than the torque produced by the wrench; in this case the torque correction coefficient is used to adjust the wrench torque reading. The angle measurement is also affected, but the wrench cannot compensate the angle measurement.

In this Section

- How to calculate the Torque Correction Coefficient
- How to Calculate the Angle Correction