Planning rulers
Having managed to break my standard 18" flight planning ruler by shutting it in the car boot, I was just looking online for a replacement...
... when it occurred to me how useful it would be to have an extra-long one, or better still a 1:500,000 nautical miles tape measure.
Does anybody know if any such thing exists? I've had a good look around the usual websites and can't seem to find anything.
Anybody?
G