BobM said:
No, I mean should I use the format on my GPS that most people use from now on? Do most people use dd.mm.mmm?
Bob
The most common format for us land surveyors is degrees, minutes, seconds. Bearings contained in deeds and on survey documents use that format.
Having your GPS set for degrees and minutes to 3 decimal places (deg,m.mmm) will yield accurate locations to input into mapping sites and software.
A minute expressed to the thousandth is the equivalent of being able to express your seconds to two decimal places, which a lot of units do not have as an option.
If you have ever toyed with NJDEP Imap, the format on their high quality digital aerials is the State Plane Coordinate System (NAD 83).
You should be able to set your unit to that format as well and then you can search by coordinate value on their maps.
In addition, as you peruse the NJDEP maps, the State Plane coords beneath your cursor are displayed at the bottom of the screen.
I use Maptech.com more than anything when I am at work to get an initial lat/lon for an object then convert it to state plane using Corpscon (free program from Army Corps) or NJGS Conversion Utility (also free).
You can then enter the coords in IMap and light up multiple layers of data over your area.
Enjoy.
Scott