Precision-manufactured device greatly extends the use and range of your optical collimator for rifles equipped with large objective scopes or scopes mounted in rings high above the centerline of the bore. Very easy to use: Mount your collimator onto the elevation arm, insert your bore spud in the elevator block, then lock with thumbscrew. Insert your spud into the bore and move elevation shaft up or down. Adjust the collimator so its grid view is near the center of the objective lens, and lock collimator height with second thumbscrew.
NOTE: Can be used with any bore spud or arbor 1/2" or smaller to include expandable arbors.
SPECS: Elevator Block - Aluminum. 1¾" (4.5cm) long, ¾"(1.9cm) wide, 1¾" high. Elevation Shaft - Stainless steel. ¼" (6.3mm) diameter. Elevation Arm - Aluminum. 3⁄8" (9.5mm) diameter. Includes instructions. Can be used with any bore spud or arbor 1/2" OD or smaller to include expandable arbors.