Request InfoLapmaster Wolters Ltd.Lapmaster International has issued a 36 3 24-in. wall chart that details the principles of using light bands and how to interpret them for measuring flatness in conjunction with monochromatic light. The use and maintenance of optical flats, and basic surface finish descriptions and conversions are also detailed in this chart. Lapping, polishing, grinding and quality control labs will find it useful.See full productRelated content from Photonics MediaPRODUCTSPhotonics Showcase May 2023 IssueEnergy Sensor for Femto LasersBLINK High Speed is the latest LaserPoint achievement specifically developed to measure ultrafast lasers with pulse duration down to femtoseconds. BLINK HS allows measuring the energy of each pulse...Photonics Spectra July 2023 IssueMetrology SystemThe MESO™ metrology solution from Imagine Optic is designed for at-wavelength testing of flat surfaces. 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