Friday, May 29, 2009

Slip Stick Navigation

The slide rule is a splash proof non-electronic calculator with numerous nautical applications. Try one out for time, speed, and distance calculations on the internet at:

The 10 inch Keuffel & Esser 4080 models are good values on eBay. Also look up a reference book SLIDE RULE FOR THE MARINER by H.H. Shufeldt.

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