Gearwrench Micrometer Torque Wrench

torque wrench
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
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.

micrometer
One millionth of a meter
(micrometry) measuring with a micrometer
micron: a metric unit of length equal to one millionth of a meter
caliper for measuring small distances