This is a simple adapter to permit Dioptrx use with eyepieces having smaller eyeguards. Designed for use with 19mm and 24mm Panoptics and 20mm Nagler Type 5 eyepieces.
We consider eye relief acceptable, particularly at night when your eye pupil enlarges. However, in bino-viewer applications, with Dioptrx attached, “nose – relief” may hinder use of the 24mm and 19mm Panoptics.
For normal operation of any of these eyepieces without Dioptrx, the adapter can be left permanently attached since operation with the provided larger eyeguard is quite comfortable.