NavList thread: Re: Bob Goethe's Mark 2 Navigators slide rule, test drive comparisons.

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13 Jul 2020, 18:34 | Gary LaPook
14 Jul 2020, 20:27 | Alan S
18 Jul 2020, 16:09 | Sean Johnston
18 Jul 2020, 16:56 | Alan S
07 Aug 2020, 11:45 | Murray Felstead