Mechanic at steam pump in electric power house

A mechanic is a person who uses tools to repair things (generally machinery) or works to keep things operating properly. A broader definition of a tool is an entity used to interface between two or more domains that facilitates more effective action of one domain upon the other

Many mechanics are specialised in a particular field such as auto mechanics, bicycle mechanics, boiler mechanics, industrial maintenance mechanics (millwrights), air conditioning and refrigeration mechanics, aircraft mechanics, Diesel Mechanics and Tank Mechanics in the armed services. An auto mechanic (or car mechanic in British English and motor mechanic in Australian English) is a Mechanic who specializes in A bicycle mechanic is a Mechanic who can perform a wide range of repairs on Bicycles A person who works in a cycling store is usually only considered a bike mechanic The trade of millwright is concerned with the construction and maintenance of machinery The term air conditioning refers to the cooling and dehumidification of indoor air for Thermal comfort. Refrigeration is the process of removing Heat from an enclosed space or from a substance and moving it to a place where it is unobjectionable