Hi Don,

I converted the GPMP coordinates from Old Egyptian (Helmert 1906/7) to WSG84 using a Garmin etrex which gives:

N 29.97916
E 31.13418

Have a look.

Note: The photograph is taken at an angle, so while the coordinates are actually at the centre of the base, the top of the GP is shown sloped/displaced to the SW - so the error is even less than it appears - only a handful of metres or better IMO if you measure from the edge of the base (230/2m). The photo is fixed over the landscape atground level and the topography does not include the GP.

Here's another I took recently - I was in the carpark at the time:

(Remember an etrex is +/- 6m usually)

N 51.42874
W 1.85436
WSG84

I'd say in every case I've matched GPS and GE, the error has been less than 10m.

Dave L



Edited 3 time(s). Last edit at 11/15/2006 01:36PM by Dave L.