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100% Certified Authentic

Bob's Watches
100% Certified Authentic

At Bob's Watches, your trust is very important to us. We believe that buying a pre-owned Rolex watch online should be simple, honest, and straightforward. To that end, we guarantee that every Rolex watch on our site is 100% authentic, comprised entirely of Rolex parts. Our mission is to be the leading trusted online source for selling and buying authentic pre-owned Rolex watches. We stand behind this authenticity guarantee with a full money back refund on any watch not found to be completely genuine.

BOB’S WATCHES

ROLEX BLOG

How to Use an Omega Speedmaster

March 10, 2020

BY Paul Altieri

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The Omega Speedmaster is one of the world’s most iconic watches. You know all about its history because it went to the moon, and most collectors can spot that dial and bezel from a mile away. But when it comes to actually taking full advantage of the tachymeter functionality on the Omega Speedmaster, there’s no shame in saying you just don’t know how it works. Don’t worry, it’s actually much easier than you think, so let’s get started!

How to Use an Omega Speedmaster Guide

What is a tachymeter scale?

A tachymeter is used to measure both speed and distance. And on the Speedmaster, you can read the tachymeter scale on the bezel. Nope, those aren’t just random numbers! In fact, they are graduated from 500 to 60 – the numbers representing either kilometers or miles, whatever you prefer to measure in. 

How to Use an Omega Speedmaster Moon watch Instructions

Dial breakdown

On the face of the classic Speedmaster Professional Moonwatch, you’ll find three sub-dials. The first, situated at 3 o’clock is a thirty minute scale. The second, at 6 o’clock, is a twelve hour counter. The last, over at 9 o’clock, is a running seconds indicator. The seconds hand for the chronograph – which is centrally mounted, rather than being displayed within a sub-dial – is large, pointed, and thinner than the hour and minute hands, and it gets used in conjunction with the tachymeter scale to calculate distance or speed.

Omega Speedmaster Tachymeter Instructions Guide Ultraman

How do I use the stopwatch?

You can time something up to twelve hours with the Omega Speedmaster chronograph. All you have to do to start the timer is press the top pusher, located at two o’clock, in. This will start the seconds hand. To stop it, press the top pusher again. To reset the chronograph, press the lower pusher, located at four o’clock. This is how standard chronograph watches operate, and the same instructions can be used for operating the stopwatch feature on other watches like the Rolex Daytona.

How do you use an Omega Speedmaster Moon Watch

How do I figure out speed and distance with my Omega Speedmaster?

Now, the Speedmaster’s tachymeter functionality is based on basic math. And if you wanted to use algebra, the equation to do so would be T=3600/t. The ‘T’ is the tachymeter scale value, the ‘t’ is the elapsed time and 3600 is the number of seconds in an hour. You could use this to figure out your speed and distance. But why do that when you have a handy Speedmaster strapped to your wrist? 

The first thing to do is figure out what you’ll be measuring – kilometers or miles. Then, you’re going to want to make sure you have an accurate representation of distance, for example, the mile markers on the highway. This is necessary so that you can accurately stop and start your watch over a mile or kilometer distance.

Omega Speedmaster Professional Moonwatch Chronograph guide

Using your Omega Speedmaster Tachymeter scale

  1. Push the top pusher in to start the chronograph when you pass the first marker
  2. Press the pusher again when you pass the second mile marker
  3. See where the second hand has stopped and read the value on the bezel’s tachymeter scale
  4. This number represents how fast you were traveling

That’s it, folks! The dial and bezel of the Omega Speedmaster look quite impressive and complicated, and they are easily among the most identifiable traits among all Omega watches; however the Speedmaster itself is actually quite easy to operate, so get out there and start using yours today!

How to use Omega Professional Moon watch Tachymeter

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Bob's Watches is an independent watch dealer and is not sponsored by, associated with and/or affiliated with Rolex, or any other brand listed. Bob's Watches only sells pre-owned watches and provides its own warranties on the watches it sells. Rolex Datejust, Rolex Day Date President, Submariner, Presidential, Explorer, Sea Dweller, Super President, GMT Master, GMT, YachtMaster, Prince, Milgauss, MasterPiece, Air King, Cosmograph Daytona, and PearlMaster, etc are all registered trademarks of the Rolex Corporation. All brands including Brequet, Cartier, Audemars Piguet, Patek Philippe, Ulysse Nardin, Breitling and Omega, etc are trademarks of their respective owners.