Don't Let A Tilted Gun Ruin Accuracy
Mount this fold-away level on your scope tube and be certain the crosshairs are as carefully aligned as they were when you sighted in. Just a slight amount of tilt can throw a shot off-target and the longer the range, the worse the error. The Scoplevel is visible just above the reticle where your sighting eye can check it easily before every shot.
Big Book Catalog, Issue:69, Page:278
SPECS: Black plastic. 3-3/4" (9.5cm) extended height.