An annular fluidic device includes a closed annular tube, wherein the tube includes at least one portion of transparent wall and contains a rigid torus bathed in a fluid filling the internal volume of the tube, in that the torus is arranged to be movable in the tube, and wherein at least one permanently polarised magnetic element integral with the torus allows it to undergo a moment of force causing it to be aligned in the direction of the external magnetic vector. A watch case can include this device.

An annular fluidic device includes a closed annular tube, wherein the tube includes at least one portion of transparent wall and contains a rigid torus bathed in a fluid filling the internal volume of the tube, in that the torus is arranged to be movable in the tube, and wherein at least one permanently polarised magnetic element integral with the torus allows it to undergo a moment of force causing it to be aligned in the direction of the external magnetic vector. A watch case can include this device.

The invention relates to a capsule for a compass and use thereof. The capsule has a housing designed in multiple parts for receiving at least one scale device (10) for reading at least one geographical indication, wherein the scale device (10) is arranged mounted on a mounting device (8), and the housing has a cover part (2) for upper closure of the housing and a base part (4) for lower closure of the housing, wherein the cover part (2) and base part (4) are permanently connected to each other via a perforated shell surface (6). Furthermore, the capsule has a pressure equalization element (18) arranged around the housing and spanning the shell surface (6) at least in part for equalizing pressure fluctuations of a liquid medium arranged in the compass capsule (1), wherein the pressure equalization element (18) is designed in an elastic manner.

The invention relates to a capsule for a compass and use thereof. The capsule has a housing designed in multiple parts for receiving at least one scale device (10) for reading at least one geographical indication, wherein the scale device (10) is arranged mounted on a mounting device (8), and the housing has a cover part (2) for upper closure of the housing and a base part (4) for lower closure of the housing, wherein the cover part (2) and base part (4) are permanently connected to each other via a perforated shell surface (6). Furthermore, the capsule has a pressure equalization element (18) arranged around the housing and spanning the shell surface (6) at least in part for equalizing pressure fluctuations of a liquid medium arranged in the compass capsule (1), wherein the pressure equalization element (18) is designed in an elastic manner.

An annular fluidic device includes a closed annular tube, wherein the tube includes at least one portion of transparent wall and contains a rigid torus bathed in a fluid filling the internal volume of the tube, in that the torus is arranged to be movable in the tube, and wherein at least one permanently polarised magnetic element integral with the torus allows it to undergo a moment of force causing it to be aligned in the direction of the external magnetic vector. A watch case can include this device.

An annular fluidic device includes a closed annular tube, wherein the tube includes at least one portion of transparent wall and contains a rigid torus bathed in a fluid filling the internal volume of the tube, in that the torus is arranged to be movable in the tube, and wherein at least one permanently polarised magnetic element integral with the torus allows it to undergo a moment of force causing it to be aligned in the direction of the external magnetic vector. A watch case can include this device.