The Pin Point 3X Scope can be matched to the calibration of your personal laser range finder. The hub of this scope's technology is a patent pending elevator turret mounted on the top of the scope that is calibrated in one yard increments, determined by the speed of your crossbow. It is customized to your bows performance. Simply range your deer, dial its distance, and shoot with confidence that you have shot at your deer to the exact yard. The construction of the chassis is a one piece 1 inch aluminum mono tube for ultra-bright light gathering at dusk and dawn. It is 3x magnification, with a fast focus external locking ocular ring. The crosshair is a laser glass etched reticle with a 4 MOA illuminated center point. The illumination can be selected in five brightness settings of either red or green. The Pin Point scope comes with 1” rings and a custom drop over base that installs on 7/8" weaver style rails. The Pin Point scope is waterproof, fogproof, and shockproof and comes with a complete set of turret speed tapes from bow speeds of 280 to 380 feet per second.