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Japanese 10 x 60 mm with 60 Degree Inclined Oculars


The 10 x 60 mm Japanese model was designed with oculars inclined 60 degrees, and it utilizes an Amici type roof prism in combination with a rhomboid prism to set and adjust IPD. This roof and rhomboid combo is a common characteristic in the larger aperture Japanese instruments that utilize inclined eyepieces. This design in particular uses an altered version of the classic Erfle eyepiece, which has a 60 degree apparent field and real field view of 6 degrees.

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