Glass Tubular Level Vials used in level instruments

Glass tubular bubble level vials are also called glass tubular level vials, which are widely used in various kinds of levels or instruments to see whether a surface is horizontal or vertical. There are many kind of bubble level vials of different shapes and materials. There are the high-precision glass tubular bubble level vials, general-precision glass tubular bubble level vials and common glass tubular bubble level vials.