A similar watch is published in "Breitling" by Benno Richter, page 131.Navitimer.Trade-mark registered in La Chaux-de-Fonds on 26 February 1955.The first Navitimer watches were launched on the market. "Navitimer" is a word derived from "Navi" and "Timer", It was truly a milestone and for many people it was "the" Breitling watch or chronograph. The watch was designed for flying enthusiasts, racing fans and sports people. With this instrument, all the necessary calculations for a rally or a flight could be made, so the Navitimer was more than just a chronograph, it was a complete navigational instrument on the wrist. It was universally usble in flying, and for that reason, the first Navitimer bore the letters A.O.P.A., the initials of the "Aircraft Owners and Pilots Association", in the Breitling emblem.The Navitimer is equipped with the logarithmic scales of a slide rule. The moveable outer scale position was chosen in order to allow for the calculatory processes. Though, one must keep in mind the decimal place. Some examples among the coutless calculating operations are: Multiplication, division, calulation of speed per hour, distance covered in a given time and at a specified speed and the time needed to cover a certain distance at a certain speed.The Breitling firm's emblem.In the firm's early days, watches were usually marked on the underside of the dial, so that from outside it was not easy to see that the watch was made by Breitling. The signature at that time was "Montbrillant". Around 1930-1932, the watches were signed with the "Breitling" script, which remained until the sixties. The Navitimer was an exception. Beginning in 1952, the "AOPA" emblem - the large wing with the letters on it, the big swallow - was used, since this watch was intended for pilots. Wily Breitling changed the "Breitling" signature in the sixties, since he was of the opinion that one could not easily read the name of Breitling in script form. He left the typical "B" initial on the dial, and the name could now be read in capital letters. Again it was only the Navitimer that had the two stylized airplanes on the dial as the firm's symbol. The firm's emblems changed more often in advertisements. The present Breitling fir has maintained the old tradition, and the present-day symboconsists of the "anchor" with the letter "B" in the certre, plus the wings, to represent Breitling in the water, on land and in the air.