Did you know the Jardur Bezelmeter chronograph (est.1937) was the only tool watch that sported a “degreemeter” scale on the face?
The basic mathematics of navigation is based on the concept of vectors, which are defined by direction and distance magnitude. Before GPS became available, measuring distance along any vector while airborne used the product of speed and elapsed time. In addition standard rate turns used degrees per second. Both are computations facilitated by the chronograph’s timing function and by the unique degreemeter scale on the dial of the Bezelmeter 960. The standard rate turn has absolutely no significance to anyone except a trained pilot.