Thanks for the response. Yes, I know, that that price for that particular slide ruler meant it belonged to Captain James Cook or Professor E. Fermi. At least. One of the best are the ones that were manufactured in Germany, before WWII. They were kind of slightly yellowish in color because real ivory was used. Precision and qualiity- not matched. But for a regular calcs any slide ruler would work. By the way, in Chech Republic they made it with a real big magnifying glass making calculations very handy. Regrading fractions. Yes, I also had my time with educators regarding that issue. Found it later that there iis no problem in working with that kind of fractions whatsoever.
Regarding books. Math for navigators I bought on Amazon, about $ 10.00 Plus shipping and handling. Dutton 1944, and I'm not kidding, was left on the top of the garbage can. So it was a really free lunch. Maybe later, if you want, I'll try to scan TAble of Content, and let me know what section you and other gentlemen would like to get, so I'll try to scan it. Book is only 106 pages long, and kind of half-size.
MAybe pdf is available. Just don't know.
Regarding books. Math for navigators I bought on Amazon, about $ 10.00 Plus shipping and handling. Dutton 1944, and I'm not kidding, was left on the top of the garbage can. So it was a really free lunch. Maybe later, if you want, I'll try to scan TAble of Content, and let me know what section you and other gentlemen would like to get, so I'll try to scan it. Book is only 106 pages long, and kind of half-size.
MAybe pdf is available. Just don't know.