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2. Magnetic level gauge - Wikipedia

   en.wikipedia.org/wiki/Magnetic_level_gauge

   A magnetic level gauge pulled out from inside the valve housing on top of a railway tank car in the United States [1]. A magnetic level gauge is a level gauge based on a float device that can experience floatation in both high and low density fluids.

3. Companhia Brasileira de Cartuchos - Wikipedia

   en.wikipedia.org/wiki/Companhia_Brasileira_de...

   It serves as the headquarters for CBC Global Ammunition, the holding for a group of companies internationally active in the ammunition sector: CBC Brazil, Magtech Ammunition USA, MEN Germany and Sellier & Bellot Czech Republic.

4. Staff gauge - Wikipedia

   en.wikipedia.org/wiki/Staff_gauge

   A staff gauge or head gauge is calibrated scale which is used to provide a visual indication of liquid level. When installed perpendicular to an inclined or sloped surface, a staff gauge is usually calibrated so that the indicated level is the true vertical level .

5. Level sensor - Wikipedia

   en.wikipedia.org/wiki/Level_sensor

   A variation of magnetic sensing is the "Hall effect" sensor which utilizes the magnetic sensing of a mechanical gauge's indications. In a typical application, a magnetism-sensitive "Hall effect sensor" is affixed to a mechanical tank gauge that has a magnetized indicator needle, so as to detect the indicating position of the gauge's needle.

6. Landau levels - Wikipedia

   en.wikipedia.org/wiki/Landau_levels

   There is some gauge freedom in the choice of vector potential for a given magnetic field. The Hamiltonian is gauge invariant, which means that adding the gradient of a scalar field to A changes the overall phase of the wave function by an amount corresponding to the scalar field. But physical properties are not influenced by the specific choice ...

7. List of rail transport modelling scale standards - Wikipedia

   en.wikipedia.org/wiki/List_of_rail_transport...

   In terms of model railway operation, gauge 3 is the largest (standard gauge) scenic railway modelling scale, using a scale of 13.5 mm to the foot. The Gauge '3' Society represents this aspect of 2 + 1 ⁄ 2-inch gauge railway modelling with both electric and live steam operation. Gauge '3' corresponds to NEM II scale, also known as "Spur II" in ...