Abstract: A level indicator for a telescopic sight can comprise a lower clamp member including a first end defining a threaded aperture and a second end defining a cylindrical head, and an upper clamp member including a first end defining an access hole and a second end defining a socket in which the cylindrical head is receivable. The upper clamp member is rotatable about the cylindrical head to form between the respective first ends of the clamp members a gap through which the telescopic sight is receivable into a space defined between the upper and lower clamp members. A level housing in which a level is received can extend from either clamp member. A single threaded fastener is receivable in the threaded aperture through the access hole to secure the upper clamp member to the lower clamp member around the telescopic sight.

Abstract: A lever assembly for an optical scope defining a mounting surface, a mounting hole, and indicia, the lever assembly comprising a lever member and a mounting member. The lever member comprises a base portion comprising a base wall defining an engaging surface adapted to engage the mounting surface and an extension portion comprising at least one extension side wall extending from the base wall such that a lever sightline is defined by the base wall and the at least one extension side wall. The mounting member is adapted to secure the base wall to the mounting surface by engaging the mounting hole. The mounting member secures the lever member to the optical scope such that the indicia can be viewed along the lever sightline while the lever member is displaced through a range of movement to adjust the optical scope.

Abstract: A level indicator for a telescopic sight can comprise a lower clamp member including a first end defining a threaded aperture and a second end defining a cylindrical head, and an upper clamp member including a first end defining an access hole and a second end defining a socket in which the cylindrical head is receivable. The upper clamp member is rotatable about the cylindrical head to form between the respective first ends of the clamp members a gap through which the telescopic sight is receivable into a space defined between the upper and lower clamp members. A level housing in which a level is received can extend from either clamp member. A single threaded fastener is receivable in the threaded aperture through the access hole to secure the upper clamp member to the lower clamp member around the telescopic sight.

Abstract: A level indicator system for an aiming system comprising a base assembly, a level assembly. The base assembly comprises a base member defining a base axis, a plate, and a support member. The level assembly comprises a level indicator defining a level axis. The base member and the plate support the support member such that a location of the plate relative to the base member is adjustable. The support member supports the level assembly such that a location of the level axis relative to the base axis is altered when a location of the plate relative to the base member is adjusted.