| (available in silver, white and blue) Model PM 200 Meter is a digital precision optical instrument used to measure distance between human pupils in the process of optometry for fitting spectacles Characteristcs This device is designed in a scientific and reasonable way, integrating technologies on optics, mechanism, electricity and microcomputer into whole. - Using optical methods to realize hairsprings orientation which replaces the mechanical orientation. - Adopting a full-digital design to effectively eliminate error in optometrist’s artificial measurement, allowing objective and precise measurement of the patient’s pupillary distance. - A flexible baffle design convenient for storage avoiding possible malfunction in operation. - Save energy for low power design |