Combination squares are typically used for general carpentry work. They are effective for fast and accurate measuring or marking of 90 degree, 45 degree and 180 degree angles, as well as for checking depth.
Combination switch and receptacle
One unit containing both an electrical switch and a receptacle.
Combination window
A window with glass and screen panels that are interchangeable.
Combination wrench
One of the most popular hand tools, the combination wrench combines an open end and box end of the same size on each side of the wrench.
Combined annual efficiency (cae)
A measure of the amount of heat produced for every dollar of fuel consumed for both home heating and water heating.
Combined building sewer
Sewage disposal system that carries both water drainage and sanitary waste away from a building.
Combined sewer
A sewer system that carries both sanitary waste and storm water runoff.
Combined-cycle power plant
A power plant that uses two thermodynamic cycles to achieve higher overall system efficiency; e.g.
Combing ridge
A term used to describe an installation of finishing slate at the ridge of a roof whereby the slates on one side project beyond to the apex of the ridge.
