- Fits for UTM, MGRS, USNG or other metric based coordinate systems.
- Marked with degrees and mils measurements around the circumference of the protractor.
- Used with the following map scales: 1:24,000 1:25,000 1:50,000 1:10,000 1:100,000 1:250,000 1:500,000.
- Includes a 1:24,000 scale for USGS 7.5 minute topographic maps.
- Larger 1:50,000 and 1:100,000 scale rulers for maps with wider grid spacing.