French IGN maps

[Lmitch]

Hi

I'm off to the Pyrenees and am getting my head round the IGN 1:50 maps.

I can see grid square easting and northing numbers but what system do they relate to?

A refuge location was given in Latitude and longitude but I couldn't make that fit the map

I know the GPS system is WGS/84. Is there a similar app to OS locate for the smart phone that anyone can recommend?

All interesting but I am a bit surprised by my ignorance given this is not my first time in the French mountains. Maybe it is old age forgetfulness creeping in!
cheers
Laura

[prog99]

It is indeed wgs84 however you need to check if the map has been printed with this in mind. It'll say gps compatible on the front cover.
I use iphigenie when in France and just pay a small amount for access to the mapping for my trips.