12/17/2011

Garmin US TOPO MicroSD Data Card for Garmin GPS Units Review

Garmin US TOPO MicroSD Data Card for Garmin GPS Units
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I ordered this map, assuming it was based on 24k USGS maps. When it arrived, I noticed that in the lower corner of the package it said 100k. This means than one inch of the map is equal to 100,000 inches (1.57 miles). This compares to one inch of the 24k map being 0.37 miles. When you consider that the map is in 2 dimensions, this means that the 100k map has about 1/16th as much detail as the 24k map. When you are using a map for hiking, small scale is very important.
The 24k map is available on Amazon.com at the time of this review (12/2009) and is only about $10 more.
Garmin Topo U.S. 24k Mountain North - Idaho-Montana-Wyoming

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