HP Forum Archive 16

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Diwa 601-1 Rietz slide rule dating Message #1 Posted by Antonio Maschio (Italy) on 26 Apr 2006, 12:02 p.m. Wow! I bought today the slide rule in the subject! What a marvel! It's a 12.5 standard, but what a slide rule! With no jokes, please, about dating a slide rule (something similar recently took place when I started a thread about "dating a calculator"; I know Americans use "date a girl" to mean "establish the date to go out with a girl"; in Italian this has no sense, since we use "darsi un appuntamento" and "datare" means "finding the date"), is there a way to find when a slide rule has been produced? From the box, the leather case, the slide, the stator, the cursor I can get no information apart the following on back side of the slide: Diwa DENMARK No. 601-1 Thanks. -- Antonio

Re: Diwa 601-1 Rietz slide rule dating Message #2 Posted by Etienne Victoria on 26 Apr 2006, 1:04 p.m., in response to message #1 by Antonio Maschio (Italy) Googling around gives a very nice italian site ;-) As for **when** they were built, I can't help sorry. Greetings from France Etienne

Re: Diwa 601-1 Rietz slide rule dating Message #3 Posted by Etienne Victoria on 26 Apr 2006, 1:12 p.m., in response to message #1 by Antonio Maschio (Italy) Sorry, I forgot the very best site. Etienne

Re: Diwa 601-1 Rietz slide rule dating Message #4 Posted by Palmer O. Hason, Jr. on 26 Apr 2006, 8:50 p.m., in response to message #3 by Etienne Victoria Of several good reference books on slide rules the one I prefer is by Peter Hopp of Great Britain. Unfortunately, my copy is stored at my winter home.

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