This steel sight is adjustable for elevation only. Comes complete with mounting screws and 1 aperture. The Vernier scale is used for all Axtell target sights which is divided into points starting at 0 with the next mark being 0.05 and increasing in 0.05 increments. The eye disks are drilled out to 0.052", just as the originals were. Machined from solid bar stock, these sights are held to very close tolerances to achieve instrument quality.
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