14" Optical Comparator 20x Grid & Radius Mylar Overlay Chart / Screen / Lens

14" Jones Lamson Optical Comparator Radius & Angle Glass Chart / Screen / Lens

14" Optical Comparator Glass General Purpose Chart / Screen / Lens

14" Optical Comparator 50x Grid & Radius Glass Chart / Screen / Lens

Micro Vu comparator

S-T Optical Comparator 30" Glass Screen 74-0008 - Used

Optical Comparator Chart Parts For Profile Projector Overlay Chart 512400 NO.20

Optical Comparator Glass Face Plate 15-1/2" Diameter Used