Richter S-2 Focal Plane ^ Microscope

     When used with Precision Lens Standards this unit can verify and calibrate focus scales on lens mounts to high accuracy. (Lens standard is optional)

     A chrome thin-film reticle is at the focus of the microscope. An aerial image from the lens being tested is focussed in the same plane as the reticle. 

     The R-2 collimator can be used as an artificial infinity in conjunction with the S-2 Focal Plane Microscope, which can be checked to factory accuracy by the user.