Jump to content

Map Ref


tiddles

Recommended Posts

quote:
Originally posted by Mrs T:

How do I convert the British Ordinanace Survey map refs to the world Lat & Long stuff


Your GPS can do this for you. Just set the datum to British Ordinanace Survey, enter the waypoints, then change the datum to WGS-84 (or whatever). The waypoints will be converted.

 

3608_2800.gif

"Don't mess with a geocacher. We know all the best places to hide a body."

Link to comment

PS is right. If you go into Menu on your eTrex there should be an option in the Setup menu that allows you to change the map datum field. The unit will do the conversions for you. If you need to do it manually (God Forbid icon_eek.gif) then a site like Jeeep.com can do it for you.

 

Changing it in the GPSr unit is the easiest way. I've been on one cache that had some triangulation involved and the cache description said to change the datum field to UTM. For some reason, triangulation is supposed to be more accurate with that datum than WGS84 icon_confused.gif Does anyone know if this is true? And if so, why?

 

Be not afraid of greatness: some are born great, some achieve greatness, and some have greatness thrust upon them. The rest go geocaching.

Link to comment

For OS grid references for caches in the UK, you might find GeocacheUK's stat's pages useful. If you click on links there to caches on geocaching.com, all the co-ords on the pages have automatic conversions to OSGB as well as the original lat/long.

 

Bill

 

-------------------------------

"Ah, take the Cache and let the Credit go..."

The Rubaiyat of Omar Khayyam, trans. Edward Fitzgerald

Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...