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also known simply as a vacuum, is a device that causes suction in order to suck up dirt/particles and dust from floors, upholstery, draperies and othe...
A sheet of polyethylene plastic (Visqueen) placed directly on top of the sub-grade before the concrete floor or slab is poured to help keep moisture...
is a piece of electronic test equipment used to determine the presence of electricity in a piece of equipment under test.
An instrument for measuring in volts the differences of potential between different points of an electrical circuit.
