Patent ID: 7584570

Claim:
A telescopic gun sight having an optical system comprising a forward objective lens element, a rear eyepiece lens element and an intervening erector lens element aligned along an optical axis constituting a line of sight and protectively confined within an elongated tubular housing adapted to be securely affixed to a gun for shooting a bullet at a target, a transparent reticle in said optical system between said objective and erector lens elements, said reticle having distance-measuring and aiming indicia thereon, said indicia comprising a center vertical straight hairline and a center horizontal straight hairline, said center vertical and center horizontal hairlines intersecting perpendicularly, and four substantially straight horizontal range-marker hairlines of sequentially increasing incremental lengths disposed below said center horizontal hairline and substantially parallel thereto and in vertically bisected relationship with said center vertical hairline, the vertical spacing of said range-marker hairlines below said center horizontal hairline being non-evenly spaced and proportional to the drop of said bullet at regularly increased target ranges, as described by the parabolic flight of real projectiles fired in any gravitational field, wherein the spacing of said range marker hairlines below said horizontal center hairline are about 2.0, 4.8, 7.5, and 10.5 inches of subtention at 100 yards respectively but where other spacing ratios can be applied to specific other types of guns and loads for special or unique situations.