noun. Any of various instruments for comparing a measured property of an object, such as its shape, color, or brightness, with a standard.

noun. An apparatus for making comparisons; especially, an instrument for comparing the lengths of nearly equal bars, either from end to end or between lines engraved upon them.

noun. undefined

noun. A vessel in which liquid is kept rapidly stirred and at a uniform constant temperature so that thermometers immersed in it must all be maintained at the same temperature. Simultaneous readings of the secondary thermometers and the standard are made, and the corrections to the former are thus determined for a wide range of temperatures.

noun. An instrument or machine for comparing anything to be measured with a standard measure; -- applied especially to a machine for comparing standards of length.

noun. Any device for comparing a physical property of two objects, or an object with a standard.

noun. An electronic device that compares two voltages, currents or streams of data.

"This multicenter, double blind, randomized, repeat dose placebo controlled study will include an open label comparator arm and will evaluate approximately 90 postmenopausal osteoporotic women for a period of 24 weeks."

transfer comparator  

5v  alternator  amplifier  analyzer  attenuator