Brass - Import export

Frame brass. Tubular bubble vial glass. Version Nickelplated and highgloss polished. Form B black anodised. Note Bubble levels are used as a type of zero indicator instrument for checking horizontal inclination in e.g. spirit levels, inclinometers, metrology instruments and machine constructions. The tubular levels can be fastened using the two holes. Form A one sight window Form B three sight windows Sensitivity in angular minutes for 2 mm bubble travel Green filling

High-carbon steel tempered and black oxidised. Brass bright.