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Yashima 15 x 80 mm with 45 Degree Inclined Oculars

Details

The Yashima 15 x 80 mm model has a 45 degree deviation prism in conjunction with a Porro II prism. The IPD can be calibrated by the rotation of the prism housings. The real field view is 4 degrees with an apparent field of 60 degrees, and the eyepiece is an Erfle variation.