William Lyman invented these sights, and founded the Lyman Gunsight Company in 1878. These are wonderfully precise replicas. This Lyman No. 2 sight is designed to fit a Aldo Uberti & Company manufactured Winchester Model 1873 lever action rifle.
This sight has standard Winchester 2.195" bolt centers. Maximum elevation from the base to the center of the eye disk is approx 2-1/2".

Sights include a both a 10-32 straight grip and 10-32 pistol grip longer tang screw, 10-32 forward mounting screw, both large and small eye disks, detailed instructions for vertical alignment, and a foam fitted hard plastic storage case. Drilling and tapping will be required to install this sight on most rifles.