Several months ago I created a set of reference cards to carry on an every day basis. The contents include:<br><br>Volume Equivalents such as gallons, liters, quarts, pints.<br>Metric/US Equivalents. such as meters, feet, yards.<br>Decimal Equivalents such as 1/16" = .0625<br>Metric/US Conversions such as miles,meters, kilometers.<br>Map Scales<br>Temp Conversions F to C<br>Kitchen measures such as Quarts, tablespoons, etc.<br>Water Purification Formula, such as bleach, iodine, etc.<br>Some Geometric Formula such as area of triangle, etc.<br>A pocket size UTM grid reader.<br>A pocket size Circular protractor 0 to 360 degree.<br>Some common knots for rope and fishing.<br><br>what I found was almost a deck of cards to carry.<br><br>Hope this helps<br><br>Ted Fisher<br>Vermilion County (Special Tactics Search and Rescue)