The Leupold FX-I Rimfire 4x28 1" Fine Duplex is a simple 4x magnification optical telescope with a sharp and clear image, waterproof construction and a precise duplex reticle with 0.25 MOA setting.The Leupold FX-I Rimfire 4 × 28 1" Fine Duplex is a classic optical telescope from the Golden Ring series and offers excellent value for money.It is a one-piece barrel (inch) made of anodized flying aluminium that resists bumps, recoil, corrosion and scratches.The inside is filled with dry nitrogen to prevent internal fogging of the lenses . The sight is completely waterproof, so it can be used in rain, fog or other humid environments.Bright and clear imageThe optical system uses multi-coated 4-coated lenses to ensure a clear field of view from edge to edge, exceptional contrast and bright images even in low light.The sight comes with a factory parallax of approximately 54 m, which is the distance at which firearms are most commonly fired.Accurate reticleThe scope features a Fine Duplex reticle in the background . The reticle is much thinner than conventional duplex, making it perfect for accurately shooting small targets.The low profile turrets can be adjusted to 1/4 MOA . The cross adjustment range is 80 MOA vertically and horizontally. The drums have reset walls that allow adjustment without additional tools.Leupold FX-I Rimfire 4×28 1" Fine Duplex features:Lightweight and compact construction, weather and evaporation resistant,Multi-coated 4 layer lenses,Classic inch tube,Constant 4x magnification,Fine double-sided mesh in the background,Parallax factory set to 52 m,Low profile turrets with 0.25 MOA adjustment,Lifetime warranty.Basic informationLinear field of view every 100 m [m] 8.5Distance from eye [mm] 114Magnification [×] 4Parallax adjustment [m] 52Fine duplex (mesh) typeFine duplexTower type coveredAdditional dataVertical (height) adjustment [MOA] 80Level adjustment (airflow) [MOA] 80Displacement at full rotation [MOA] 0Step adjustment [MOA] 0,25Application (intended use) sport shootingDimensionsOverall length [mm] 234Weight [g] 213Objective diameter [mm] 28Tube diameter [mm] 25.4 mm (1)