im pretty sure that the answer is: industrial revolution
Field worker. The production of food by growing crops underpinned the entire economy.
Crosman offers a service to locate shops who repair old rifles and guns that are no longer in production. You can find the link on their home pade down at the bottom. When the page opens click on "find a service center." See link below.
Crosman air gun company owns the Benjamin line of air rifles. They offer a service to locate air gun repair shops that restore older Benjamin, Sheridan and Crosman air guns and rifles. See the link below
Most of the aqueducts were built underground because that was the most efficient way to move the water. The underground pipes were easier to repair if there were a problem. The above ground aqueducts were only used when it was impractical for an underground one, such as supplying the city of Rome or any large city.
The one with the fewest parts. If two machines do the same job, one has 100 parts, the other 1000, The one with 100 parts is more efficient over time because it has fewer parts to break or to replace. It would take less time to repair a 100 piece machine than a 1000 piece one and time determines efficiency. It's like asking the question, which puzzle is more efficient, a 100 piece one or a 1000 piece one. Also, machines with less parts should be more responsive. The more linkages you have, for instance, the more motion loss you will have.
Interchangeable
Mechanical repair to a car.
The Aerospace Parts Store is the best place to purchase Aerospace parts and equipment for the repair or production of Aeronautical devices including planes.
Harmful molecules are continually bombarding the human body, such as free radicals, by-products of energy production. When young, the body is able to repair most cellular damage. As it ages, the repair process becomes less efficient.
Mechanical engineers can work in airlines. They work in the repair of the engine and the fuselage.
Mechanical Engineering is a discipline of engineering that applies the principles of engineering, physics and material sciences for analysis, design, manufacturing and maintenance of mechanical systems. It involves the production and usage of heat and mechanical power for the design, production and operation of machines and tools.
Advantage and disadvantage of labour saving devices
Gachapon production I think
yes repair of machinery that involve in production is part of direct cost.
that depends whats wrong with it and your mechanical skills
General maintenance and repair workers maintain and repair machines, mechanical equipment, and buildings. They work on plumbing, electrical, and air-conditioning and heating systems.
Junkyards, repair shops.. perhaps Toyota dealerships.. sometimes they'll have them on the lot or showroom with mechanical problems (which is why they offer warranties).