Quote:
Originally Posted by jimmie
Mine is this: http://www.antiquark.com/sliderule/s...lide-rule.html
Well, not virtual, real one. Yes, since its S scale is 6 - 90, I need to perform simple subtraction for anything beyond 90 but that won't hurt much; it's maybe alternative to "Brain Age" on Nintendo DS :p And knot - km conversion is simple... the most fundamental usage of sliderule is multiplication and division, anyway 
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I'd love an N600. I had to settle for an N200 Trig (because the prices for an N600 on Ebay are ridiculous!). It's the same size as the N600, but it doesn't have all the scales. On the back side it has the C, D, S, T, and ST scales, which are the only ones you really need. Well, the S, ST (for small bearing changes less than 6 degrees), and the C and D.