The Omega Speedmaster Professional, affectionately known as the "Moonwatch," is more than just a timepiece; it's a legend etched in history. Its enduring popularity stems not only from its iconic design and robust build but also from its versatile chronograph function, particularly its tachymeter bezel. This comprehensive guide from Bob's Watches will walk you through the intricacies of using both the chronograph and the tachymeter on your Omega Speedmaster, empowering you to harness the full potential of this exceptional watch.
Bob's Watches Omega Speedmaster Instructions: Understanding the Chronograph
Before we delve into the tachymeter, let's ensure we have a solid grasp of the chronograph function itself. The chronograph is essentially a stopwatch integrated into the watch. On the Speedmaster, it's activated and controlled using the pushers on the right side of the case.
* Start: Pressing the top pusher (at the 2 o'clock position) starts the chronograph. The central seconds hand begins to move independently, recording elapsed time.
* Stop: Pressing the top pusher again stops the chronograph. The central seconds hand freezes at the precise elapsed time.
* Reset: Pressing the bottom pusher (at the 4 o'clock position) resets the central seconds hand back to zero. This should be done *after* stopping the chronograph. Attempting to reset while the chronograph is running can damage the movement.
Bob's Omega Speedmaster Instructions: The Importance of Proper Reset
Always remember the sequence: Start, Stop, Reset. Failing to follow this sequence can lead to complications and potentially require servicing. The Omega Speedmaster is a precision instrument; treat it with respect.
Bob's Omega Speedmaster Manual: Understanding the Tachymeter Bezel
The tachymeter bezel is a circular scale located on the outer edge of the watch's bezel. Unlike many other chronographs that have a tachymeter scale printed on the dial, the Speedmaster’s is on the rotating bezel, allowing for greater flexibility. This scale is calibrated to measure speed over a fixed distance, typically one kilometer or one mile.
Tachymeter for Omega Speedmaster: Decoding the Scale
The numbers on the tachymeter bezel represent units of speed (e.g., kilometers per hour or miles per hour) corresponding to a specific time interval. The numbers increase as they move clockwise from the "0" marker. This means that higher numbers indicate faster speeds. The scale is usually marked in increments, though the exact markings vary slightly between different Speedmaster models.
Omega Tachymeter: How it Works
The tachymeter function works in conjunction with the chronograph. To use it, you must measure the time it takes to traverse a fixed distance. Here's a step-by-step process:
1. Start the Chronograph: Begin timing when you pass a fixed point (e.g., a kilometer marker on a road).
2. Stop the Chronograph: Stop the chronograph when you reach the next fixed point (e.g., the next kilometer marker).
3. Read the Speed: Align the central chronograph seconds hand with the corresponding number on the tachymeter bezel. This number represents your average speed over that distance.
Example: Let's say you timed your journey between two kilometer markers, and the chronograph stopped at the "60" mark on the tachymeter bezel. This indicates that your average speed was 60 kilometers per hour (kph). If the chronograph hand stopped at "40," your average speed was 40 kph.
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