General Questions
Questions about geographic coordinate systems
- What is UPS?
- Is the WGS84 datum more accurate than NAD27?
- What are the distances represented by a minute of latitude and longitude?
- How do I calculate the distance between two points?
- Is the UTM system based on True North or Magnetic North?
- Is UTM is another name for MGRS?
Questions about GPS selection, setup and use
- What kind of accuracy can I expect from my GPS?
- My GPS readings are consistently in the wrong position. What am I doing wrong?
- Which lat/lon format should I use?
- What is the User UTM Grid setting used for?
- Do I use UTM/UPS or User UTM Grid?
- How do I set my GPS receiver to use UTM?
MapTools and our products
Free downloadable tools
Web tutorials and exercises
Using our products
- Is the information in the UTM booklet the same as the information on the web page?
- The UTM grid I have doesn't fit the grid on my map. What's wrong?
- Can I set the declination on a Brunton 54LU compass?
- The lat/lon ruler does not fit the lat/lon grid on my map. Why not?
- How durable are your tools? Will the ink wear off?
- Do you have a tool for this scale?