GPS Map 60CSx - 5 digit OS Grid refs?

[gilmorr]

I have just bought a GPSmap 60CSx from a dealer in Leeds. I was told I could save some money with US spec machine, as I don't need city to city routeguiding in the UK - I just want to use it for offroad walking, cycling and driving.

It all seems to work fine, but when set for the British Grid and OS coordinates it only shows 5 digits in the coordinate. e.g. SK 63536. I know that OS coordinates have 6 digits. Have I been screwed? There's not much point having a GPS that won't reconcile with map coordinates is there?

All advice gratefully received. Thanks
rob

[kartracer]

OS Grid references are normally specified with an even number of digits. This number may be 4, 6, 8, or 10, depending upon the precision being used. Are you sure that your 60CSx does not allow 5 digits for easting and another 5 for northing?
_________________
Kam

[Skippy]

Kartracer is right I think.

The digit OS coordinates are rounded to 100 meters, but the GPS is reporting a location with 10 digits resolution (1 meter resolution).

So, a 6 digit OS coordinate like SK 633 536 will be shown on the Garmin as:

SK 63300
BNG 53600

Note the extra two digits - your GPS unit is probably accurate to about 2-5 meters though it will report a location accurate to 1 meter...
_________________
Gone fishing!

[missing_user]

I have the American Basemap 60CSx with CityNavigator v9.
Dover Ferry Port is
TR 33560
BNG 41898

[kartracer]

Strumble,

Yes, what you have there is a 10 digit grid reference within the National Grid 100km TR square (see:
http://www.ordnancesurvey.co.uk/oswebsite/gi/nationalgrid/nghelp1.html )

Starting from the SouthWest corner of the grid square (which is somewhere in the English Channel) you go 33560 metres east and 41898 metres north.
_________________
Kam

[gilmorr]

[kartracer]

We see you’re using an ad-blocker. We’re fine with that and won’t stop you visiting the site.
Have you considered making a donation towards website running costs?.
Or you could disable your ad-blocker for this site. We think you’ll find our adverts are not overbearing!