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Old 3 May 2013, 04:03 PM   #31
skprd13
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Excellent post! Learn something new everyday.

Aloha from Kauai.
Tom
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Old 13 May 2016, 10:32 AM   #32
sueno213
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Very good info. Why does Breguet Transatlantic xx1 have indices every two minutes on the 30 minute scale?
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Old 15 August 2016, 02:47 AM   #33
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Thanks for the fun sunday-fact :)
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Old 18 March 2017, 03:01 AM   #34
Dimik
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Hi guys, thank you for providing guidance on how to read the bezel. But I have a question about how you would read it if the process is longer than a minute? E.g. 1 car completes a 1 km lap in 1:30. What is the speed then?
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Old 18 February 2018, 07:22 AM   #35
Mellow Mike
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The answer is 40 kph. The time is 90 sec. divided by 2 shows speed of 80 kph then divide 80 by2 = 40
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Old 19 July 2018, 05:50 AM   #36
Goschi10
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Quote:
Originally Posted by Gurmot View Post
Another great article, and very useful too but aren't we forgetting another member of the Speedy bezel family?

Here's my 1967 cal 321 Speedy with a Pulsations or Doctor's bezel. It is used to measure heart-rate by recording the time it takes for 15 heart-beats. The watch is stopped after the 15th beat and the equivalent BPM is displayed.

What do you reckon to this one?

Cheers - Simon
This is an absolutely incredible piece
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Old 5 December 2018, 02:55 AM   #37
heritagewatchdealers
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Thank you!
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Old 5 April 2019, 06:36 AM   #38
watchprenuer
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great info thanks
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Old 31 May 2019, 01:56 PM   #39
alexmiranda
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Very informative post, showed this to a friend which is also an Omega fan.
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Old 16 June 2019, 11:56 PM   #40
Pedrovasques
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How can you calculate on a 116500?
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Old 10 July 2019, 02:14 AM   #41
schoolboy
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How can you calculate on a 116500?


The exact same way
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Old 14 November 2020, 05:55 AM   #42
CEG
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Great post for the Omega newbie!
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16710-116505-116660-116680-116610LV-216570-126331-116710-114060-126621-TudorGMT-Tudor BB58-Sapphire Speedy Pro-Speedy Rising Sun

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Old 28 July 2021, 04:28 PM   #43
johnny.tran1
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Great info
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Old 27 August 2021, 07:47 AM   #44
luchion20
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The more you know... thanks for the info
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Old 12 January 2023, 05:18 AM   #45
wrussell46
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Reading this makes me more excited for a Speedmaster!

These watches are such a cool piece of kit, form and function at its best.
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Old 7 December 2023, 07:55 AM   #46
Michi K.
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Quote:
Originally Posted by Mellow Mike View Post
The answer is 40 kph. The time is 90 sec. divided by 2 shows speed of 80 kph then divide 80 by2 = 40
The tachymeter bezel and the minute track "switch" places for times greater 60 seconds
Let's use the example from above:
The time reading is 90 seconds.
Next, look up the "90" on the tachymeter bezel. E voilá: the minute track reading is 40 (=40kph/40mph).
If you have a time reading of 3 Minutes (=180 seconds). Check "180" on the bezel... *Bam*: approx. 20kph/20mph.

The reading on the bezel starts to run "backwards" (for time readings greater 60 seconds)... in this way, you are able to measure speeds as slow as 7,5 kph/mph (=500 seconds)

Cheers,
Michael

Gesendet von meinem SM-G950F mit Tapatalk
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