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Trail Conference Maps
UTM Grids
All newer Trail Conference maps have a UTM grid. UTM is short for
Universal Transverse Mercator, a common map projection. These are the
fine lines
with a square grid of 1 km (approximately 0.6 mile)
on
a
side.
These
are useful for estimating distances at a glance. The map edge is marked
vertically with the northing, e.g. 4588000N,
and horizontally with the easting, e.g. 18T 585000E.
The northing is the distance in meters north of the equator. The easting
(minus 500000) is the distance in meters from from the center line
of the zone. NY and NJ are in zone 18 (hence the 18T in the easting).
The
bold characters
can be used to reference a paricular grid square, thus the trailhead
of the Breakneck Ridge Trail in Hudson Highland State Park could be
described as near 88x85. GPS users like UTM because if they know the
UTM grid point of some location, they can enter into their GPS and
navigate to that point (good for finding mines or airplance crashes).
USGS maps
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