Map Rulers - Explorer Set of 24 MapRulers

Note: Product edges and interior cutouts are shown with a thin red line. Neither the red lines, colored background, nor map image are printed on the actual tool. (more info)

Product Description

Twenty-four rulers that should cover most of the maps you’re likely to encounter in land navigation.

These rulers can be used to measure or plot latitude/longitude coordinates, UTM/MGRS/USNG coordinates, and to measure distances in either meters or miles.

On the front side, the rulers have minutes and seconds on one edge and decimal minutes on the other edge, allowing you to use either notation. On the back side, the rulers have distance in meters on one edge, and distance in either miles on the other edge.

Latitude is measured directly with the rulers. But, since a degree of longitude covers a shorter distance as you move towards the poles, the rulers are used on a diagonal to measure longitude. See the usage diagrams for more information.

The rules are packaged in a handy clear vinyl storage pouch, and includes instructions for use.


Scale Maps Front Side Back Side
Span Ruler
Increments
in Minutes
Ruler
Increments
in Seconds
Ruler
Increments
in meters
Ruler
Increments
in Miles or
Nautical Miles
1:24,000
  • USGS 7.5 minute topographic maps
2.5 min 0.01 min 1 sec 10 m 0.01 mi
1:25,000
  • USGS 7.5 minute topographic maps of Alaska and a few places in the Continental United States
2.5 min 0.01 min 1 sec 10 m 0.01 mi
1:50,000
  • Canadian National Topographic System (NTS) maps
  • USGS County series topographic maps
5 min 0.01 min 1 sec 50 m 0.05 mi
1:62,500
  • USGS 15 minute topographic maps
5 min 0.05 min 1 sec 50 m 0.05 mi
1:63,360
  • USGS 15 minute topographic maps of Alaska
  • 1 inch = 1 mile
5 min 0.05 min 1 sec 50 m 0.05 mi
1:65,000
  • Some Delorme Atlas & Gazetteers
5 min 0.05 min 1 sec 50 m 0.05 mi
1:69,500
  • Green Trails Maps of Washington & Oregon
5 min 0.05 min 1 sec 50 m 0.05 mi
1:77,000
  • Some Delorme Atlas & Gazetteers/li>
5 min 0.05 min 1 sec 50 m 0.05 nm
1:80,000
  • Some Delorme Atlas & Gazetteers
7.5 min 0.05 min 1 sec 50 m 0.05 nm
1:84,000
  • Some Delorme Atlas & Gazetteers
7.5 min 0.05 min 1 sec 50 m 0.05 nm
1:100,000
  • USGS & BLM 30 X 60 minute topographic maps
  • Some Delorme Atlas & Gazetteers
10 min 0.05 min 5 sec 50 m 0.1 mi
1:125,000
  • Some Delorme Atlas & Gazetteers
7.5 min 0.05 min 5 sec 50 m 0.1 mi
1:126,720
  • US Forest Service forest maps
  • 1/2 inch = 1 mile maps
7.5 min 0.05 min 5 sec 50 m 0.1 mi
1:150,000
  • Some Delorme Atlas & Gazetteers
15 min 0.1 min 5 sec 100 m 0.1 mi
1:156,000
  • Some Delorme Atlas & Gazetteers
15 min 0.05 min 5 sec 100 m 0.1 mi
1:160,000
  • Some Delorme Atlas & Gazetteers
15 min 0.05 min 5 sec 100 m 0.1 mi
1:182,000
  • Some Delorme Atlas & Gazetteers
15 min 0.1 min 5 sec 100 m 0.1 mi
1:190,000
  • Some Delorme Atlas & Gazetteers
15 min 0.1 min 5 sec 100 m 0.1 mi
1:200,000
  • Some Delorme Atlas & Gazetteers
15 min 0.1 min 10 sec 100 m 0.1 mi
1:250,000
  • USGS 1 X 2 degree series topographic maps
  • Canadian National Topographic System (NTS) maps
  • Some Delorme Atlas & Gazetteers
15 min 0.1 min 15 sec 100 m 0.1 mi
1:300,000
  • Some Delorme Atlas & Gazetteers
30 min 0.1 min 10 sec 100 m 0.1 mi
1:320,000
  • Some Delorme Atlas & Gazetteers
30 min 0.1 min 10 sec 100 m 0.1 mi
1:400,000
  • Some Delorme Atlas & Gazetteers
30 min 0.5 min 15 sec 500 m 0.5 mi
1:500,000
  • USGS State Base Maps
  • NOAA Aeronautical Sectionals
30 min 0.5 min 30 sec 500 m 0.5 mi
Length
  • The front side has two 8 inch scales, one marked in 1/16ths of an inch and the other in 1/10ths of an inch. The flip side has a 200 millimeter ruler, and 10 numeric unit conversion factors listed.

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Item description Price Quantity
Map Rulers - Explorer Set of 24 MapRulers
Part Id: ExplorerSet, Made in USA, UPC: 824249110050
$47.75

Specifications

Height: 9.000 in. (229mm)
Width: 3.000 in. (76mm)
Thickness: 0.020 in. (1mm)
Made in USA.

How to use products like this...

Using a map ruler to plot/measure latitude longitude position

Measuring latitude with a map ruler
Measuring longitude with a map ruler

Here is a tutorial on working with latitude longitude coordinates.

Using a map ruler to plot/measure a UTM position with 10m precision

Map with UTM position

Here is information on using the Universal Transverse Mercator coordinates (UTM).

Here is information on using the United States National Grid (USNG).

Here is information on using the Military Grid Reference System (MGRS).