Magnetic flap level meter also known as magnetic flip column level meter, magnetic float level meter or magnetic float level meter, magnetic flap level gauge has high sealing, anti-leakage characteristics, to make up for the poor clarity of the glass plate (tube) level meter indication, easy to rupture and other defects, and the whole process of measurement without blind spot, clear display, large measurement range, can be applied to high temperature, high pressure and corrosion-resistant occasi