Turn your Viper® HD 85mm spotting scope into the perfect optical measuring stick for range work and spotter-to-shooter communication. A fixed magnification of 33.5x gives you all the power you need, and the eyepiece has a diopter ring and the ability to rotate the reticle to level it with the horizon line, allowing you to dial the eyepiece to your eye and your shooting scenario. XR™ and ArmorTek® lens coatings keep your view through the HD optical system crystal clear, and you get your choice of MOA or MRAD. Only compatible with Viper® HD 85mm models.