WRUW Today?

Posts
818
Likes
3,126
105.003-65

I understand the Tachymetre and Pulsations bezels, but what's the original purpose of the 20km bezel on yours?
 
Posts
1,441
Likes
11,971
I understand the Tachymetre and Pulsations bezels, but what's the original purpose of the 20km bezel on yours?

Hi, thanks for your reply. This telemetric bezel is graduated to indicate the speed in air. It allows the user to calculate the distance between the observer and a situation that is observable both visually and audibly. It was mainly used for military purpose and weather situations. For more details please see Chronomaddox.com/4bezels.

My watch was delivered to RCAF in july 1966, so probably for military use. Best regards !
 
Posts
1,433
Likes
6,585
Hi, thanks for your reply. This telemetric bezel is graduated to indicate the speed in air. It allows the user to calculate the distance between the observer and a situation that is observable both visually and audibly. It was mainly used for military purpose and weather situations. For more details please see Chronomaddox.com/4bezels.

My watch was delivered to RCAF in july 1966, so probably for military use. Best regards !
For the uninitiated among us: See the flash, start chronograph. Hear the noise, stop chronograph. Wherever the pointer is lined up on the tachy indicates how far away the flash originated.
 
Posts
818
Likes
3,126
Hi, thanks for your reply. This telemetric bezel is graduated to indicate the speed in air. It allows the user to calculate the distance between the observer and a situation that is observable both visually and audibly. It was mainly used for military purpose and weather situations. For more details please see Chronomaddox.com/4bezels.

My watch was delivered to RCAF in july 1966, so probably for military use. Best regards !

Ah, of course! 20km/min = 1200km/h = Mach 1 give or take a tad. Very cool. But the URL you cited doesn't appear to be valid. 🙁

EDIT: Found the correct URL: http://chronomaddox.com/4bezels.html Thanks!
Edited:
 
Posts
818
Likes
3,126
One has to wonder at the usefulness of it in an aircraft ca.1966 though - I wouldn't have thought you'd hear anything more than a kilometer or two away. But on second thoughts, this was during the Cold War so potential blasts were probably expected to be pretty loud!
 
Posts
1,441
Likes
11,971
One has to wonder at the usefulness of it in an aircraft ca.1966 though - I wouldn't have thought you'd hear anything more than a kilometer or two away. But on second thoughts, this was during the Cold War so potential blasts were probably expected to be pretty loud!

Imo more for ground stuff. But take into consideration that most of the older (esp. the 40s/50s) chronos already had this feature. So there might be some reasons for Omega to offer that option for their speedies.
 
Posts
478
Likes
4,703
Back on the wrist for Speedy Tuesday, this time on another cheap NATO that I picked up to see how I like it. It’s not grabbing me like the Martini did, but maybe it’ll grow on me.


Add the Omega 20mm buckle and it vastly improves any NATO (part 94512002)

Edited:
 
Posts
3,111
Likes
23,857
Broad Arrow for my first day (yesterday) of a consulting project in Tokyo
 
Posts
3,228
Likes
13,986
On a consulting project too, with 38mm of vintage goodness. From 1952:
 
Posts
241
Likes
1,227
So... finally, I landed a mint full kit Japanese Racing Speedmaster on my hit list for over a year. It’s a keeper!
Love the way the red hands pop on those beauties. Enjoy!
 
Posts
241
Likes
1,227
1971 Special.

26104871903_cdc19e203c_b.jpg
Seiko made some elegant watches back then. Love my Lord Marvel Hi-Beat from '67
 
Posts
818
Likes
3,126
It’s still Tuesday in the western hemisphere😉

Now there's an old fella who's seen some hard miles.

The watch, the watch. 😀