Vector Optics | Bubble Level | Spirit Level | 11mm | Dovetail

Vector Optics Bubble Level 11mm Dovetail – scope alignment tool for dovetail rails

This bubble level from Vector Optics is a compact accessory used to align a riflescope horizontally on an 11mm dovetail rail. Built from 6063-T6 aluminum and weighing only 11 grams, it adds minimal bulk to the setup while preventing canted optic mounting.

Construction and materials

The housing is manufactured from 6063-T6 aluminum, providing a lightweight yet rigid structure that resists deformation across repeated mounting and dismounting. The unit measures 47mm in length and weighs 11 grams. A matte black coating reduces reflections and matches existing optics. The bubble vial is positioned on the side of the housing for clear reading from a shooting position.

Application and use

This level is used for aligning and zeroing riflescopes, ensuring the optic is mounted level rather than canted. A canted scope produces aiming deviations that increase with distance, so this tool supports consistent results at longer ranges. It is suited to sport shooters and air rifle users who regularly swap optics between platforms and require repeatable alignment.

Integration and compatibility

The level is designed specifically for an 11mm dovetail rail, commonly found on traditional air rifles and rimfire sights. The side-mounted vial keeps the sight line clear, allowing placement in front of or behind the optic. It does not fit Picatinny rails. The unit ships as a standalone part without rings or adapters.

Maintenance and lifecycle

The included hex key secures the unit via the side screw. No regular servicing or cleaning cycle is required beyond keeping the vial surface clear.