bimetallic element
A device formed of two metals which are bonded together, each having a different coefficient of thermal expansion; used in temperature-indicating and temperaturecontrolling devices.
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bezant, besant, byzant
An ornament shaped like a coin or disk; sometimes used in a series in decorative molding designs.
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bevel square
A carpenters tool, similar to a square but having a blade that can be adjusted to any angle .
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bevel protractor
A graduated semicircular protractor having a pivoted arm; used for measuring or marking off angles.
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bent frame
One of a number of sections in a timber framework that is transverse to the length of a large barn or house