The Original-Attaches Firmly To Glasses-Eliminates "Fuzzy" Sights
Instantly adjustable aperture mounts directly on prescription or shooting glass lens to improve eye focus, thereby eliminating iron sight and target "fuzzing". Raises scores and lets both rifle and pistol shooters keep shooting even when the eyes won't focus as well as they used to. Thin, sharp, aperture edge gives crisp sight picture. Suction cup mounting won't scratch or mar lens, holds tight for one-handed adjustments.
Big Book Catalog, Issue:70, Page:365
SPECS: 5/8" (15.9mm) O.D. x ¼" (6.3mm) thick disc. Aperture adjusts from .020" (.508mm) to .155" (3.94mm). 9/16" (14.3mm) diameter suction cup.