Abstract: The invention relates to a measuring system for measuring the relative positions of a first rotary component and a second rotary component relative to each other, comprising a first measuring unit adapted for mounting on the first rotary component, and a second measuring unit adapted for mounting on the second rotary component, wherein at least one of said measuring units comprises a detector unit for determining the positions of said rotary components. According to the invention, at least one of said measuring units comprises a gyro for detecting the current angular position of said measuring unit at rotation of said rotary components.

Abstract: The invention relates to a measuring system for measuring the relative positions of a first rotary component and a second rotary component relative to each other, comprising a first measuring unit adapted for mounting on the first rotary component, and a second measuring unit adapted for mounting on the second rotary component, wherein at least one of said measuring units comprises a detector unit for determining the positions of said rotary components. According to the invention, at least one of said measuring units comprises a gyro for detecting the current angular position of said measuring unit at rotation of said rotary components.

Abstract: The invention relates to a mobile display unit (13) for displaying graphic information (16) representing an arrangement (100) of physical components (1, 2), wherein the display unit (13) comprises a control unit (21) adapted for transmitting information regarding at least the position of said arrangement. The invention is characterized in that the display unit (13) comprises a gyro unit (25) for registration of the orientation of a display unit (13) relative to said arrangement (100), where said gyro unit (25) is connected to said control unit (21), and where the control unit (21) is adapted to adjust said display of said graphic information (16) in dependence on the orientation of the display unit (13).