Bristol Instruments is a world leader in optical interferometer-based instrumentation. Its proven Michelson interferometer and Fizeau etalon technologies ensure that its products provide reliably accurate measurements for scientists and engineers who are involved in scientific research, fiber communications, and optical metrology. Bristol's flagship products accurately characterize the wavelength and spectral properties of lasers used by researchers at universities, government laboratories, and industrial laboratories. They are also used for the development and production testing of laser transmitters used in optical fiber communications. In addition, Bristol Instruments provides products to measure critical physical dimensions of materials such as specialty plastic films, medical tubing, and ophthalmic products.