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GPSing

• WAAS and its Relation to Enabled Hand-Held GPS Receivers

Hiking Poles

• Pete's Poles Page

Water Purification

A compendium of sources of information from the Pacific Crest Trail Association.

Map Folding

Date: Mon, 10 Feb 1997 11:11:37 -0600 (CST)
From: "Frank Reid"
Reply-To: reid@indiana.edu
To: at-l@saffron.hack.net
Subject: [at-l] Topo map origami

USGS topographic maps are getting more expensive, even as their quality decreases.
Here's a folding method (from a U.S. Army book on map reading) that helps preserve 
them by making them easier to handle in the outdoors: You can see any part of the map 
by unfolding no more than two creases.  Try it with a sheet of paper first:


1.  Fold the map in half, bottom to top, with the printed side
    _outward_ ("x" = upper-right title block).
________________
|    ____________|_
|   /            x/
|  /             /
| /             /
|/_____________/

2.  Fold left-to-right, such that the upper-right title is inside.

/|\
/ | \
/  |  \
/   |  x\
|    |   |
|   /\   |
|  /  \  |
| /    \ |
|/      \|

3.  Fold outer half of each "book leaf" backward (title is now outside).

|\  /\  /|
| \/ |\/x|
|  | | | |
|  | | | |
\ |/ \| /
\/   \/

--  Frank     reid@indiana.edu

Magnetic Declination

Here is the FAQ: http://www.cam.org/~gouletc/decl_faq.html. But be aware that the New York-New Jersey area is loaded with iron mines which locally make a compass almost useless. It is also worth noting that you will be off by about 90 feet per mile for each degree that you wrong. In other words ignoring the difference between magnetic north and true north is a serious error. You will be off by about 1000 feet, e.g the wrong side of hill. The declination changes with time. Look at the date of the declination information on any USGS topo and be aware that it could be off by a few degrees if it is not a recent map. Some topos have not been updated in 20 years.

Fuel Names - the names of fuels in various countries

The Fuel Name FAQ. This document is available at: http://www.welcomehome.org/backcountry/fuel.names.txt
Editor: Mike Buckler <mbuckler@REMOVE_TO_MAIL_MEperth.dialix.oz.au>

Contents
--------
1) Introduction.
2) Table of fuel names.
3) Editors Note: "white spirit / white gas" confusion.
4) Some notes on white gasoline.
5) Some notes on diesel fuel.
6) Some notes on kerosene.
7) Other WWW links.
8) Alphabetical listing of notes for various countries.

1) Introduction.
----------------
This FAQ is designed to help you find the right fuel for your stove. It is posted on a semi regular basis to rec.backcountry and started out as the "Worldwide Alternative Names for Fuels"

Boot Lacing for a Better Fit