noun. An instrument used to measure the rotation of the plane of polarization of polarized light passing through an optical structure or sample.

noun. A polariscope; more specifically, an instrument for measuring the amount of polarized light in the light received from a given source, or for measuring the angular rotation of the plane of polarization. See photo-pola-rimeter, polaristrobometer, and saccharimeter.

noun. An instrument for determining the amount of polarization of light, or the proportion of polarized light, in a partially polarized ray.

noun. An instrument used to measure the rotation of the plane of polarized light as it passes through a sample of an optically active compound.

noun. an optical device used to measure the rotation of the plane of vibration of polarized light

"And the only difference between the two drugs as far as detection goes is that, when viewed through an optical rotatory device called a polarimeter, dextromethorphan rotates light to the right, and levomethorphan rotates light to the left."

pickering's polarimeter  saccharimeter  

optical device  

altimeter  estimator  perimeter