This method uses a tape measure and tables that convert measurements at gender and age specific sites of your body to numbers that are plugged into a simple math formula.

Advantage: Anyone with a tape measure and instructions can use it.

Disadvantage: Tables available only in college textbooks and one book available to the public: THE SCALE COMPANION-HOW TO FIND YOUR IDEAL WEIGHT. Measurements are not accurate for very low in fat or very high in fat individuals.

Cost: Less than $10

Where you can get it: Smart Bargains at: http://www.rondagates.com