The tradition of precision pendulum clocks for those on the move. The exceptional hand positions are modelled after the highly accurate pendulum clocks found at observatories. When making time comparisons, it was found that the extremely wide hour hands of the observatory clocks always hid the second hand that is important for precision regulation. Therefore the regulator dials were designed with the “regulator dials” with a main dial for the minute hand, which has been kept streamlined, and two subsidiary dials for the hour and second hands. Thanks to this trick, it was then possible to read the time easily at any point – which is no doubt also an excellent feature for a wristwatch.