- The most utilized materials are : Vertical Chamber :TP 316 - TP 304
- Float : TP 316 - TP 304
- Indicating Scale : Aluminium with plastic rollers. (Optional with aluminium rollers.)
- The principle the liquid in the communicating vessels is always at the same level,
- Archimedes principle according to which a body immersed in a liquid receives a buyoancy equal to the weight of displaced liquid,
- The principle of attraction between north and south poles of two permanent magnets and that of repulsion between like poles.