The Breitling Navitimer, a watch synonymous with aviation history and sophisticated design, is more than just a timepiece; it's a precision instrument capable of performing a variety of calculations. Understanding its functions, however, requires more than a cursory glance at the dial. This comprehensive guide delves into the intricacies of the Navitimer, covering everything from basic timekeeping to utilizing its advanced features, including the crucial tachymeter scale mentioned in the provided French text ("Le tachymètre est une graduation sur le cadran ou le réhaut de votre chrono-graphe BREITLING qui permet de déterminer des vitesses moyennes ou une production horaire, sur la base d’un…"). We'll also explore where to find authentic watches, offer advice on choosing the right model for you, and guide you through the process of buying, whether new or pre-owned.
Understanding the Navitimer's Iconic Design:
Before diving into the instructions, it's crucial to appreciate the Navitimer's layout. Its circular slide rule bezel is its most distinctive feature. This rotating bezel, marked with various scales, allows for complex calculations, making it a powerful tool for pilots and enthusiasts alike. The main dial typically displays hours, minutes, and seconds, while chronograph functions (start, stop, and reset) are controlled by pushers on the case. The subdials typically display chronograph minutes, chronograph seconds, and sometimes a running seconds hand.
Basic Time Setting:
1. Pulling the Crown: Pull the crown out to the first position. This unlocks the time setting mechanism.
2. Setting the Time: Rotate the crown clockwise to set the hour and minute hands.
3. Pushing the Crown: Once the time is correctly set, push the crown back into its original position.
Using the Chronograph Function:
The chronograph is used to measure elapsed time.
1. Start: Press the top pusher to start the chronograph. The seconds hand in the subdial will begin moving, recording elapsed seconds. The minute counter will also start recording elapsed minutes.
2. Stop: Press the top pusher again to stop the chronograph. The hands will freeze at the elapsed time.
3. Reset: Press the bottom pusher to reset the chronograph hands to zero.
Deciphering the Slide Rule Bezel: The Tachymeter and Other Scales
The Navitimer's slide rule bezel is where its true functionality shines. The quote provided highlights the tachymeter, a crucial scale for measuring speed.
* The Tachymeter: As stated, "Le tachymètre est une graduation sur le cadran ou le réhaut de votre chrono-graphe BREITLING qui permet de déterminer des vitesses moyennes ou une production horaire, sur la base d’un…" This translates to: "The tachymeter is a graduation on the dial or bezel of your BREITLING chronograph that allows you to determine average speeds or hourly production, based on…" To use the tachymeter:
1. Start the chronograph when an event begins (e.g., passing a marker).
2. Stop the chronograph after a precisely measured unit of time (e.g., one kilometer, one mile).
3. The tachymeter scale on the bezel will indicate the average speed during that time interval. For example, if you stopped the chronograph after traveling one kilometer and the chronograph seconds hand points to the "60" on the tachymeter scale, your average speed was 60 kilometers per hour. If it points to "30", your average speed was 30 km/h.
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