505 Archery iris

Suitable for commercial bow sights
22 indexed points are marked from 0.5 - 12.0mm
Iris leaves with special surface coating eliminate oxidation and preserve the matt black anti-glare finish
Archers can focus on the same colour rings at different distances with an identical target picture for all
Bow hunters can determine distance to the quarry by noting the iris aperture for a given game silhouette
Available in two stainless steel threads: