Polarex spotting scopes offered an air-spaced coated achromatic objective lens in various diameters, ranging from 50mm to 100mm. Images are erect, and non-reversed, in the same natural orientation as the unaided eye. A variety of interchangeable and optional accessories were available for the various models.
Includes the 50mm, 60mm and 80mm models; Photos courtesy of Xavier Debeerst