A torque wrench is returned to its case at the setting used for the last job. Whether that is appropriate depends on the tool’s design and instructions. “Always wind it to zero” is not a safe universal rule for every mechanical or electronic wrench.
Read the instructions attached to the model
Identify the manufacturer, model and operating range. Find the specified storage setting, cleaning method and handling precautions. On tools that require adjustment before storage, use the stated minimum or other specified position rather than winding beyond the permitted scale.
Norbar’s torque-wrench care guidance discusses storage and handling; use it alongside the instructions for your particular model.
Keep the wrench clean and protected in its intended case or storage arrangement. Do not use it as a general breaker bar or add an improvised extension unless the manufacturer expressly permits the arrangement and explains the effect on use.
Separate a setting from confidence in the tool
A displayed or selected value is not evidence that a damaged tool remains accurate. If the wrench has been dropped, overloaded or behaves unusually, follow the inspection and calibration process required by the manufacturer and your workplace quality system. Do not return it to controlled work merely because the mechanism still clicks.
Record the tool identifier, relevant calibration status and any incident that needs review. A colleague should be able to distinguish a tool ready for use from one waiting for assessment. Store a suspect tool so it cannot be picked up accidentally for the next assembly.
Before use, confirm the required units and torque specification from the approved work instruction. A correctly stored wrench cannot compensate for a value read in the wrong units or a specification belonging to another joint.
At the end of the task, follow the model’s release, storage and battery instructions as applicable. Return the accessories to their proper places and note any issue while it is fresh. The aim is a tool whose condition and history are understandable, not simply a tidy case containing an unexplained setting.