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Why don't elevations on maps agree with on my GPS system?
The inherent accuracy limitations for USGS topo maps is typically about +- half a contour interval, although it can be worse than this in steep or heavily vegetated areas. This is much better than delivered by most GPS handhelds, whose elevations can be in error by several 10s of meters.
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GoPro Launches HERO4 Session
GoPro Launches HERO4 Session: the Smallest, Lightest and Most Convenient GoPro, Yet - 50% Smaller and 40% Lighter - HERO4 Session Combines Ultra-Compact Waterproof Design with Easy One-Button Control for Simple Yet Powerful Life-Capture Solution
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Carlson Software Releases Surveyor2 Data Collector
Carlson Software recently released its new Carlson Surveyor2, the newest model in its Carlson Surveyor line of data collectors. The Surveyor2 is paired with Carlson's easy-to-use software to provide a powerful, complete solution for surveying, stake out, construction layout, and GIS mapping.
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Hot Geo Job! GIS Specialist, Global Water
The GIS Specialist, Global Water conducts and coordinates freshwater (river & watershed) GIS analyses at multiple scales from project basins to regions to global, and contributes to spatial and relational database programs and provides technical expertise to Conservancy staff working on global water challenges and solutions.
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