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54 Pat HEIDENHAIN,USAF Optical Comparator Calibration Reticle 54 Pattern Glass

8x HEIDENHAIN_ZEISS Optical Calibration Reticle Pattern Cross TARGET Grid Glass

Lathe Mill Microscope Machinist OPTICAL COMPARATOR CROSS SLIDE TABLE

OGP Video & Optical Comparator Inspection Calibration Reticle PN 424658

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USA Spec. Optical Calibration Reticle Pattern Cross Gray Bars f.Foto, Movie etc