1.Place in rings or one-piece mount. Tighten rings to remove slack, leave loose enough that the can still be rotated by hand.2.Place the leveler base on the Picatinny rail or one-piece mount directly the turret of the . The angled slot should be on the top side.3.Insert the leveler wedge into the slot on the base from the side until it contacts the bottom of the turret .4.Gently apply pressure to until the rotates and is leveled.5.Tighten one ring according to the specifications provided by the ring/mount manufacturer.Remove the optic leveler.Tighten the other ring according to the specifications provided by the ring/mount manufacturer.Use of the Arisaka Optic Leveler makes the assumption that the 's turret and reticle are aligned, which may not be the case with poor quality scopes. features:correction training:grasping, other training, interactive toys, interest trainingColour:As ShownMaterial:CNC AluminumPackage Contents:1Set * Telescope Vertical Corrector Tool SetOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.