Pulse tool

An electric hand held pulse tool for performing a tightening operation in which torque is delivered in pulses to tighten a screw joint, the electric hand held pulse tool comprising:

• a bidirectional electric motor;
• an output shaft;
• a sensor for monitoring a parameter reflecting a delivered torque pulse;
• and
• a control unit for controlling the electric motor,
• wherein:
• the sensor is configured to provide information regarding the monitored parameter to the control unit,
• the control unit is configured to, during a tightening operation performed by the electric hand held pulse tool in a first direction, control the motor to provide at least one torque pulse on the output shaft in a second direction that is opposite to the first direction,
• the sensor is further configured to monitor a parameter reflecting a delivered torque pulse on the output shaft in the second direction,
• the control unit is further configured to determine information regarding a torque that has actually been installed into the screw joint during the tightening operation, using information provided from the sensor regarding the at least one torque pulse on the output shaft in the second direction, and
• the control unit is further configured to adjust torque applied during a remainder of the tightening operation in the first direction, using the determined information regarding the torque that has actually been installed into the screw joint, said remainder of the tightening operation taking place after the at least one torque pulse on the output shaft in a second direction.