Standard for Scale Bars and representative fraction
February 05 2008 |
Is there a standard for the correlation between a Scale Bar and representative fraction. ie - if I have a map that is to the scale of 1:125,000, should the scale bar be in divisions of 125? Should it stay at the recommended round number (50, 100)?
Mapping Center Answer:
I would recommend the second option. The main property you want to preserve with a scale bar is ease of use. Your map readers will find it much easier to estimate or measure easily divisible units like 10, 50, 100, etc., rather than 125, 62.5, etc. Further, the general rule for the size of the scale bar is that it should be not much larger that one third the width of the map.
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