The elevation turret has on outer fixed wall with two window cutouts. Compensation markings for the bullet weight are shown through these cutouts. The elevation turret has an inner drum that turns when adjusted. The outer portion of the turret is fixed with the window cutouts which will always face the shooter directly when the scope is mounted. – Calibrated for the .22 LR – Adjustable Parallax. – Limited Lifetime Warranty. – Magnification: 6-18 – Obj. Lens Diameter (mm): 40 – Exit Pupil Range (mm): 6.6-2.2 – Field of View @100 Yds: 16.6-4.8 – Optimum Eye Relief (in): 4 – Parallax Setting: 10 to Inf – Click Adjustment Value: 1/4 – Adjustment Range: 35-35 – Weight (ounces): 17.60