HP Forum Archive 16

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Sliding rules issuing Message #1 Posted by Antonio Maschio (Italy) on 28 Apr 2006, 5:29 a.m. According to my previous thread answers about the Diwa 12.5, I assume that, if no date is reported on the slide rule/the box/the case/the manual or anything else sold with it, there is no possibility to find when it's been made. Correct? -- Antonio

Re: Sliding rules issuing Message #2 Posted by Marcus von Cube, Germany on 28 Apr 2006, 12:07 p.m., in response to message #1 by Antonio Maschio (Italy) :) If it contains organic material (leather, wood) try the radio carbon (C14) method. :)

Re: Sliding rules issuing Message #3 Posted by George on 28 Apr 2006, 3:50 p.m., in response to message #2 by Marcus von Cube, Germany Unfortunately, I don't need to radiocarbon date the leather case of my Pickett 12" slide rule to know how old it is... :)

Re: Sliding rules issuing Message #4 Posted by Hugh Evans on 28 Apr 2006, 10:50 p.m., in response to message #2 by Marcus von Cube, Germany 14C has a +/-40 year margin of error, so it wouldn't be of much use for most slide rules.

Re: Sliding rules issuing Message #5 Posted by Walter B on 29 Apr 2006, 1:58 a.m., in response to message #2 by Marcus von Cube, Germany This method tells you only when the cow has died, but not when the case was made. And the plastic is not "organic" at all in this context. Bad luck! (Der Vorschlag war ja hübsch, aber ein bisschen sollte man schon über die Grundlagen wissen. Sch... Physik!)

Re: Sliding rules issuing Message #6 Posted by Marcus von Cube, Germany on 29 Apr 2006, 4:54 a.m., in response to message #5 by Walter B Don't take the thread too serious! :-)) Quote: This method tells you only when the cow has died, but not when the case was made. And the plastic is not "organic" at all in this context. Bad luck! I didn't know about the 40 year margin but I didn't mention the plastic at all, just wood and leather. Given the number of cows dying each day for food you can expect that it doesn't take too long to produce and further process the leather. Quote: (Der Vorschlag war ja hübsch, aber ein bisschen sollte man schon über die Grundlagen wissen. Sch... Physik!) ;-) Marcus

Re: Sliding rules issuing Message #7 Posted by Antonio Maschio (Italy) on 29 Apr 2006, 9:47 a.m., in response to message #6 by Marcus von Cube, Germany Ok, boyz, so now my only hope is to contact some spirit who can see "beyond"! ;-) Do you know some slider rules specialized medium?

Re: Sliding rules issuing Message #8 Posted by Dave Shaffer on 29 Apr 2006, 11:00 a.m., in response to message #7 by Antonio Maschio (Italy) "Do you know some slider rules specialized medium? " If they are as good as they claim, they'll contact YOU!

Re: Sliding rules issuing Message #9 Posted by Etienne Victoria on 29 Apr 2006, 11:10 a.m., in response to message #7 by Antonio Maschio (Italy) Antonio, Why not ask directly Giovanni Pastore directly at: giopastoreREMOVESPAM@katamail.com After browsing his site, I suspect he is the kind of guru you're seeking. And as an added bonus...he's italian :-) Good luck! Etienne Edited: 29 Apr 2006, 11:16 a.m.

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