Chrosziel ENG SD 2/3"-Mount Measuring Block for Collimator or Lens Projector

The Chrosziel ENG SD 2/3"-Mount Measuring Block Set is an integral LTI (lens-testing instrument) component used in calibrating ENG SD 2/3"-type lenses. Use this Measuring Block with the Universal CamCollimator, Autoreflex Collimator, or Lens Test Projector MK6. This set comprises the measuring block, a ground plate, collar, and analog depth gauge.