Inclination sensor for determining an angle of inclination (2, 2') relative to the vertical direction defined by the gravitational field, comprising • a fluid container, filled with a fluid which is sealed in a gastight manner against an external atmosphere by said fluid container as a connecting fluid, • a first pressure sensor pair having a first and a second pressure sensor, o wherein the first and second pressure sensors are arranged in an edge region of the fluid container such that • they are connected to each other by the connecting fluid, and • have a fixed and defined positional relation to each other and are thus a fixed and defined distance apart, and o wherein the first and the second pressure sensor are each configured to measure a hydrostatic pressure in the connecting fluid, and • a first and a second temperature sensor, wherein o each of the temperature sensors is assigned to a pressure sensor, o the first temperature sensor is configured to measure the temperature at the first pressure sensor, in particular in the connecting fluid, and o the second temperature sensor is configured to measure the temperature at the second pressure sensor, in particular in the connecting fluid, and • a processor which is configured o to determine a relative height (h) in the direction of gravity between the first and the second pressure sensor based on the hydrostatic pressures measured by the first and second pressure sensor, wherein the measured hydrostatic pressures can be assigned by the processor to an identical common measurement time, and o to determine an angle of inclination (2, 2') with respect to the vertical direction based on the determined relative height (h) and the fixed and defined distance apart of the pressure sensors, and o to determine the relative height in the direction of gravity and the angle of inclination also based on the measured temperatures, in particular based on a measured temperature difference. • a fluid container, filled with a fluid which is sealed in a gastight manner against an external atmosphere by said fluid container as a connecting fluid, • a first pressure sensor pair having a first and a second pressure sensor, o wherein the first and second pressure sensors are arranged in an edge region of the fluid container such that • they are connected to each other by the connecting fluid, and • have a fixed and defined positional relation to each other and are thus a fixed and defined distance apart, and o wherein the first and the second pressure sensor are each configured to measure a hydrostatic pressure in the connecting fluid, and o wherein the first and second pressure sensors are arranged in an edge region of the fluid container such that • they are connected to each other by the connecting fluid, and • have a fixed and defined positional relation to each other and are thus a fixed and defined distance apart, and • they are connected to each other by the connecting fluid, and • have a fixed and defined positional relation to each other and are thus a fixed and defined distance apart, and o wherein the first and the second pressure sensor are each configured to measure a hydrostatic pressure in the connecting fluid, and • a first and a second temperature sensor, wherein o each of the temperature sensors is assigned to a pressure sensor, o the first temperature sensor is configured to measure the temperature at the first pressure sensor, in particular in the connecting fluid, and o the second temperature sensor is configured to measure the temperature at the second pressure sensor, in particular in the connecting fluid, and o each of the temperature sensors is assigned to a pressure sensor, o the first temperature sensor is configured to measure the temperature at the first pressure sensor, in particular in the connecting fluid, and o the second temperature sensor is configured to measure the temperature at the second pressure sensor, in particular in the connecting fluid, and • a processor which is configured o to determine a relative height (h) in the direction of gravity between the first and the second pressure sensor based on the hydrostatic pressures measured by the first and second pressure sensor, wherein the measured hydrostatic pressures can be assigned by the processor to an identical common measurement time, and o to determine an angle of inclination (2, 2') with respect to the vertical direction based on the determined relative height (h) and the fixed and defined distance apart of the pressure sensors, and o to determine the relative height in the direction of gravity and the angle of inclination also based on the measured temperatures, in particular based on a measured temperature difference. o to determine a relative height (h) in the direction of gravity between the first and the second pressure sensor based on the hydrostatic pressures measured by the first and second pressure sensor, wherein the measured hydrostatic pressures can be assigned by the processor to an identical common measurement time, and o to determine an angle of inclination (2, 2') with respect to the vertical direction based on the determined relative height (h) and the fixed and defined distance apart of the pressure sensors, and o to determine the relative height in the direction of gravity and the angle of inclination also based on the measured temperatures, in particular based on a measured temperature difference.