inches in 1/8ths and 1/10ths, millimeters
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. This is an excellent tool for working with odd scale maps where you need to use a ratio calculation to determine distances and coordinate readings.
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SpecificationsHeight: 1 in. (25mm)
Width: 8.5 in. (216mm)
Thickness: 0.02 in. (1mm)
Made in United States.