A professional who calibrates and repairs torque and other wrenches, using test scale and handtools. Responsibilities include:

• Sets wrench indicator on end of wrench handle to maximum setting and inserts head of wrench into socket on test scale.
• Twists wrench until wrench mechanism releases and notes corresponding indication on scale.
• Adjusts wrench mechanism so that indications on scale coincide with releases of torque wrench, using allen wrench.
• Disassembles defective wrenches, examines parts, and replaces or repairs parts, using handtools.