[Therion] Joining old and new surveys

[Martin Sluka]

> 17. 2. 2015 v 13:34, Graham Mullan <graham.mullan at coly.org.uk>:
> 
> One always has to remember, however, that Compass natively stores all linear
> measurements in feet and decimal feet, not in metres. This is the case however the
> data is inputted. I have accidentally ended up with some alarmingly long caves before
> remembering this!

Therion may too. :)

m.s.