Hollands Scope Level The Official Scope Level of the U.S. F-Class Team! Holland's Scope Level Simply the finest and brightest scope level on the market. Sculpted design with the proper amount of off-set to see from a firing position. Eliminates turkey necking to check reticle perpendicularity. Machined from 7075 T-6 alloy and hard black anodized. Ambidextrous design, available in 1 inch, 30 mm, and 34 mm tube sizes.and hard black anodized. Ambidextrous design, available in 1 inch, 30 mm, and 34 mm tube sizes.