https://www.edmundoptics.co.kr/p/1inch-x-1inch-100-lpmm-opal-glass-ronchi-ruling/16259/
1" x 1", 100 lp/mm, Opal Glass Ronchi Ruling | 에드몬드 옵틱스
Precision Ronchi Rulings on Opal Glass offer chrome on opal and provide high tolerance. Both English and Metric versions are available at Edmund Optics.
opal glassronchi ruling
https://www.edmundoptics.co.uk/p/1inch-x-1inch-5-lpmm-opal-glass-ronchi-ruling/16254/
1" x 1", 5 lp/mm, Opal Glass Ronchi Ruling | Edmund Optics
Precision Ronchi Rulings on Opal Glass offer chrome on opal and provide high tolerance. Both English and Metric versions are available at Edmund Optics.
opal glassronchi rulingedmund optics
https://www.graticulesoptics.com/products/optical-resolution-charts/grids/r1-grid-2mm-pitch
Ronchi Ruling, Transmission Grating
Optical Resolution Charts, R1 Grid 2mm Pitch
ronchi rulingtransmission grating