Jones & Lamson Optical Comparator, Model PC-14, 1940s era

Jones and Lamson 48mm Optical Comparator and Measuring Machine , PC-14

Covel Mfg. Co. Optical Comparator, Model # 14A, Serial # 14A-2840

Jones & Lamson 20x Optical Comparator and Measuring Machine , PC-14

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

Jones & Lamson BC-14 14” Optical Comparator Profile Projector Inspection

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

Used 14" J&L / Jones & Lamson Optical Comparator 10x Grid & Radius Glass Chart