The timepiece (1) has a middle portion closed by a back portion and a crystal and comprising a peripheral shoulder in which a groove is formed. The groove is placed on a shoulder surface parallel to a central axis of the middle portion. A rotating bezel sy...

The instrument has right and left display devices (R1, R2) provided with horizontal and vertical rows of color LEDs (D2) for indicating a right-left inclination angle of wings of an aircraft (1) with respect to the horizontal at left side or right side of ...