What Are The Professional Definitions Of Mechanical Torque Wrenches In The ASME B107.300?

- Jan 17, 2020-

Accuracy: the permissible deviation, tolerance, or error band. A higher value means a lower certainty of correctness. 

Full scale: see rated capacity. 

Graduation: a mark on the instrument indicating a torque value. Hand torque instrument: tool combining hand wrenching and torque measurement functions, formerly referred to as “hand torque wrench.” 

Increment: the value of the difference between adjacent graduations. 

Indicated value: for Type I, the value the instrument dis plays when torque is applied; for Types II and III, the value to which the instrument is set or preset. 

measured value: the actual torque determined by a torque tester. 

Operating load: the operating load shall be calculated by dividing the rated capacity by the distance between the axis of the torque moment and the center of the grip or designated load point. 

Rated capacity: for graduated instruments, the maximum graduated torque value, also known as full scale; for non-graduated instruments,  the maximum manufacturer-specified torque. 

Scale: the representation of the range of the instrument, divided into increments marked by numbered and unnumbered graduations. 

Setting: the amount of torque the instrument is expected to apply.