If 14 is a few
http://www.sokkia.com/products/gsr2650lb.htm
or 2-3mm
http://www.sportsmapping.com/GPS/gps.htm
Just because our £100 Garmins don't get below 5m doesn't mean that an £30,000 piece of kit is that shite :-)
+/- 3mm. Blimeycharlie! OK- kinda puts my Garmin eTrex to shame ;(
Last time I looked a grand would give you 1m. That's what I'm after.
my brother's in the Army, and they use GPS for their mortars. they're accurate to within centimetres - if they used £100 Garmins things could get a wee bitty messy
Cheers Andy