Air Torque Wrench

torque wrench
a wrench that has a gauge that indicates the amount of torque being applied
A torque wrench is a tool used to precisely apply a specific torque to a fastener such as a nut or bolt. It is usually in the form of a socket wrench with special internal mechanisms. It was invented by Conrad Bahr in 1918 while working for the New York City Water Department.
A manual wrench which incorporates a gauge or other method to indicate the amount of torque transferred to the nut or bolt.
A tool for setting and adjusting the tightness of nuts and bolts to a desired value

air
This substance regarded as necessary for breathing
air out: expose to fresh air; "aerate your old sneakers"
be broadcast; "This show will air Saturdays at 2 P.M."
a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of; "air pollution"; "a smell of chemicals in the air"; "open a window and let in some air"; "I need some fresh air"
The invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen
The free or unconfined space above the surface of the earth