Here is some information on obtaining a very useful tool for map cataloging.
The Map Scale Indicators (MSI) is a tool for calculating map scales that is particularly useful for map cataloguing or other types of descriptive uses. It is printed on translucent, stable base, four mil film, and measures approximately 4 x 16 inches. The MSI can be used to calculate scales in miles, kilometers, degrees of latitude, and feet, generally from bar scales or grids on maps. They are no longer available from Memorial University of Newfoundland's Department of Geography.
Map Scale Indicators -- each USD or Canadian $18.00 -- postage and packing included.
Clifford H. Wood, PhD
Professor (Retired), Memorial University P.O. Box 225 Ilderton, Ontario CANADA N0M 2A0
Seen on Maps-L.