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 !
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 !
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!
So... finally, I landed a mint full kit Japanese Racing Speedmaster on my hit list for over a year. It’s a keeper!