Marine Reference and Professional Organizations: Measurement

Created and maintained by Don Hofstrand, Iowa State University, Extension and Outreach.

Site provides calculators for various conversion solutions.

Maintained by Villanova University.

Just fill out one of the fields and click Calculate.

Converts just about anything to anything else. (from the site)

Created by R. Rowlett, University of North Carolina.

From eHOW Home site.

"In mental terms, carpentry math is the hardest part of any rough framing carpenter's job. Many carpenter's never venture beyond simple addition and subtraction. Simply because they are intimidated by words, such as trigonometry, geometry, hypotenuse, or Pythagorean Theorem." from the site

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Basic tutorial about how to use a compass.