Map Rulers - Nautical Set

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

Eight of the most frequently encountered scales used on NOAA’s marine navigation charts.

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
Scale	Maps	Span	Ruler Increments in Minutes	Ruler Increments in Seconds	Ruler Increments in meters	Ruler Increments in Miles or Nautical Miles
1:5,000	NOAA Marine charts	0.5 min	0.01 min	1 sec	5 m	0.005 nm
1:10,000	NOAA Marine charts	0.5 min	0.01 min	1 sec	10 m	0.01 nm
1:15,000	NOAA Marine charts	1 min	0.01 min	1 sec	10 m	0.01 nm
1:20,000	NOAA Marine charts British Columbia TRIM Maps (Terrain Resource Information Management)	1 min	0.01 min	1 sec	10 m	0.01 nm
1:30,000	NOAA Marine charts	2 min	0.01 min	1 sec	10 m	0.01 nm
1:40,000	NOAA Marine charts	2.5 min	0.01 min	1 sec	25 m	0.01 nm
1:80,000	NOAA Marine charts	5 min	0.05 min	1 sec	50 m	0.05 nm
1:100,000	NOAA Marine charts	10 min	0.05 min	5 sec	50 m	0.1 nm

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Item description	Quantity	Price	Quantity
Map Rulers - Nautical Set Part Id: NauticalSet, Made in United States, UPC: 824249110067 Quantities of 10 or more, shipped in bulk packaging. more info	1 - 9 10 - 24 25 - 99 100+	$23.95 $20.36 $16.77 $14.37

Specifications

Dimensions:
Height: 8.500 in. (216mm)
Width: 3.000 in. (76mm)
Thickness: 0.020 in. (1mm)
Made in United States.

How to use products like this...

Using a map ruler to plot/measure latitude longitude position

Here is a tutorial on working with latitude longitude coordinates.

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

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).