GSdude
Registered user
Am I correct in assuming that attempting to locate somewhere on the 2610 using Northings and eastings is a fruitless occupation ?
regards
Me
regards
Me
Northings and Eastings
- Thread starter GSdude
- Start date
Mouse
Registered user
Sadly the 2610 only does Latitude / Longitude.
You can enter a location in MapSource using OS grid references though.
You can enter a location in MapSource using OS grid references though.
GSdude
Registered user
Cheers mouse (or should that be 'cheese mouse ?) 
we were doing that at the weekend ok
. first press and hold the page button until the grid reference page appears then touch the grid reference to bring up a window that allows you to change the co-ords to your chosen destination.
. first press and hold the page button until the grid reference page appears then touch the grid reference to bring up a window that allows you to change the co-ords to your chosen destination.
Mouse
Registered user
Jez, if you're describing what I think you are, you can't enter the coordinates in anything other than latitude / longitude - on a 2610 at least. Or if you can I've totally missed it!
bob emmerson
Registered user
Surely Northings/Eastings are the same as Lat/Long. Just a different name!!
Mouse
Registered user
Nope, northings and eastings are the two components of an Ordnance Survey national grid reference. They are measured in metres from the origin of the national grid, which is somewhere off the coast of Cornwall.
Latitude and Longitude are measured in degrees, and due to the shape of the Earth, one degree represents a variable distance on the surface of the planet. One minute (1/60 of a degree) on a great circle is equal to one nautical mile (1.852km).
Latitude and Longitude are measured in degrees, and due to the shape of the Earth, one degree represents a variable distance on the surface of the planet. One minute (1/60 of a degree) on a great circle is equal to one nautical mile (1.852km).
Bigtwin
Guest
They are the same. But different. The both simply locate a point on the earth's surface, but in different ways, as explained by Mouse.
Small point - GR don't all reference a pint off the coast of Cornwall. They refer in meters to the particular bigram of the "sheet" in question - SQ where I live, for example. Otherwise you'd need very long numbers for the reference!
The map covereage for the UK does actually commence out there though.
I'm pretty sure you can switch my 2610 into that mode - you certainly can with my 10 year old Magellan - I may be confusing the two. Pretty useless for using with OS mapsheets if you cant.
Basically - http://en.wikipedia.org/wiki/British_national_grid_reference_system
I think you are confusing the two
Mouse
Registered user
I did a search, it seems the question crops up from time to time!
The definitive answer is: The 2610 and similar units (2710 etc) only "do" latitude / longitude. The BNG support was removed as part of Garmin's "dumbing down" of the user interface to appeal to TomTom buyers
For this reason I'm looking for a cheap GPS V, for green laning.
The definitive answer is: The 2610 and similar units (2710 etc) only "do" latitude / longitude. The BNG support was removed as part of Garmin's "dumbing down" of the user interface to appeal to TomTom buyers
For this reason I'm looking for a cheap GPS V, for green laning.
Bigtwin
Guest
I did a search, it seems the question crops up from time to time!
The definitive answer is: The 2610 and similar units (2710 etc) only "do" latitude / longitude. The BNG support was removed as part of Garmin's "dumbing down" of the user interface to appeal to TomTom buyers
For this reason I'm looking for a cheap GPS V, for green laning.
Well that's shiteyville isn't it?
Here's the fun bit:
Datum shift between OSGB 36 and WGS 84
The difference between the co-ordinates on different datums varies from place to place. The longitude and latitude positions on OSGB 36 are the same as for WGS 84 at a point in the Atlantic Ocean well to the west of Great Britain. In Cornwall the WGS 84 longitude lines are about 70 metres east of their OSGB 36 equivalents, this value rising gradually to about 120 m east on the east coast of East Anglia. The WGS 84 latitude lines are about 70 m south of the OSGB 36 lines in South Cornwall, the difference diminishing to zero in the Scottish Borders, and then increasing to about 50 m north on the north coast of Scotland. (NB. If the lines are further east, then the longitude value of any given point is further west. Similarly, if the lines are further south, the values will give the point a more northerly latitude.) The smallest datum shift is on the west coast of Scotland and the greatest in Kent.
For other co-ordinate systems, the shifts are different again. For example, Universal Transverse Mercator co-ordinates differ by many hundreds of metres, as UTM northings count from the Equator, and the notional OSGB 36 position of the Equator is many hundred metres north of that on WGS 84. Similarly, attempting to give British National Grid co-ordinates on the WGS 84 datum may give wildly discrepant results.
I luv maps me. I should have been that map bloke who walked around Britain looking at them - top job that would be.
Bigtwin
Guest
I don't mind if I do!
A pint of Newquay, please.
Greg
Sudding uselses fungers.
Might as well - I'd be sick as a dog anyway...
I did a search, it seems the question crops up from time to time!
The definitive answer is: The 2610 and similar units (2710 etc) only "do" latitude / longitude. The BNG support was removed as part of Garmin's "dumbing down" of the user interface to appeal to TomTom buyers
For this reason I'm looking for a cheap GPS V, for green laning.
The Zumo supports BNG, but it's not a cheap GPS......
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