Aohong - Flange Spirit Bubble Level Vials

A flange bubble level might be a specific type of level designed to measure or ensure the levelness of flanges. For example, it might clip onto or sit atop a flange to ensure that the flange is perfectly horizontal when being installed, ensuring a proper fit and seal when mating two objects together. This could be a level that either attaches to a flange or is designed to sit atop a flange to ensure it’s level during installation or inspection.

• Flange: A flange is typically a flat rim or edge on an object, often at the end of a pipe or tube, intended for strengthening, guiding, or attaching to another object.
• Bubble Level (or Spirit Level): A tool used to determine whether a surface is level (horizontal) or plumb (vertical). It contains a sealed, liquid-filled vial with an air bubble. The position of the air bubble between marked graduations indicates the levelness of a surface.