N-BK7 Optical borosilicate-crown glass from SCHOTT

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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

BK7 is a standard glass for all kinds of optics The SCHOTT glass is nearly bubble free, has an excellent clarity, and a very low amount of inclusions  dragon link slot machine big handpay jackpot, lighting link slot machine big jackpot, casino

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