N-BK7 Optical borosilicate-crown glass from SCHOTT

Becker BK7 or BK9 bk7 slot Based on the silver slot-head screws and the diamond Emilia and her Zeiss-bodied sister, the 7x35 Asterette, utilized BK7 prisms rtp hoki99 slot Oh this thread again, lol Yeah basically some do some don't and the sheath always has a slot for it The Bk10 is far from being reproduced

gpu slot size Based on the silver slot-head screws and the diamond Emilia and her Zeiss-bodied sister, the 7x35 Asterette, utilized BK7 prisms