Sightmark 34mm Bubble Level Ring

A bubble level that clamps onto a 34 mm riflescope tube to show and correct rifle cant. It is aircraft-grade aluminium and fits with a single bolt, which spreads pressure evenly as it tightens. A highly visible centre line makes it easy to check the bubble is centred. It is 14.1 mm (0.56") wide and weighs 19.8 g. Sightmark gives a mounting torque of 10-12 in-lb.