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Interferometric Thickness Gauges

Industrial Photonics
Jan 2016
Bristol Instruments Inc.Request Info
 
VICTOR, N.Y. — Bristol Instruments 137 seriesThe 137 series of interferometric thickness gauges from Bristol Instruments Inc. measures absolute thickness to an accuracy of ±1 μm with a repeatability of ±0.05 μm.

The gauges' noncontact technique enables measurement of both hard and soft materials without damage or deformation. All material layers are measured simultaneously.

Applications include measurement of plastic films, medical membranes, glass tubing and ophthalmic products. The gauges can measure top-wall and bottom-wall thickness, outer and inner diameters, and center thicknesses and sagittal height of contact and intraocular lenses.


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GLOSSARY
metrology
The science of measurement, particularly of lengths and angles.
interferometry
The study and utilization of interference phenomena, based on the wave properties of light.
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