Maury Markowitz
From the Great White North!
- Joined
- 27 February 2014
- Messages
- 182
- Reaction score
- 117
![The_Royal_Observer_Corps%2C_1939-1945._CH8215.jpg](/proxy.php?image=https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fd%2Fdc%2FThe_Royal_Observer_Corps%252C_1939-1945._CH8215.jpg&hash=9fa438711c5e59d92c816158869771f5)
I am trying to understand what the numbers painted on the walls of this OC post might be.
The number near S is 30, which implies N is perhaps 60. These would not be degrees or grads, nor any variation of mils that I can think of. Nor does it seem to have any relation to the OS grid numbers on the chart.
Anyone know what this might be?