High octane Posted April 14, 2018 Posted April 14, 2018 14 hours ago, Xingu said: It is a slide for adding/subtracting feet and inches, down to 1/8 of an inch. We had to do that on the job site using our head and a tape measure.
Greg Myers Posted April 17, 2018 Posted April 17, 2018 (edited) and in the old world of Auto Rally . and if you really gotta have one, https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313.TR4.TRC1.A0.H0.XCurta+calculator.TRS0&_nkw=Curta+calculator&_sacat=0 Edited April 17, 2018 by Greg Myers
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