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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Dennert & Pape MHR-1 Dennert & Pape MHR-1 HR-2 Cylindrical Slide LineRuler
From: Ronald van Riet
Date: 2007 Aug 01, 01:49 -0700
From: Ronald van Riet
Date: 2007 Aug 01, 01:49 -0700
Serge, I am pretty fluent in French and English, I own an HR-1 and I am fairly familiar with its use in navigation, so I could be your "translator"/"co-writer". I had already seen a copy of your paper but have not had the time to go through it in depth. I would like to work with you in getting a paper out, but IMHO this should not only contain the mathematical principles behind the HR series and its operation, but also how this is put in practice in navigating. As far as working on a "final" paper, we might want to await the IM2007 in September (www.rekenlinialen.org) where I believe a paper will be presented on these types of calculators. Ronald van Riet On Jul 30, 7:49 pm, Serge SAVOYSKYwrote: > July, 30th 2007, > > Dear Sir, > > Thank you for your answer. > . > I am a member of a French association of collectors of calculating machines and other office machines ; we publish twice a year a journal, in French, “Arts Mécaniques”. It is a modest publication, about 200 copies, each issue, nevertheless of good quality ; and these issues are available in the Library of the “Conservatoire des Arts et Métiers”. > I began to write my paper at the beginning of 2003 for an issue in 2006. As usual I began to establish a bibliography. I must say that I bought the slide rule, for about €250, almost twenty years before in a market in the south-west of Paris, near my Office “Laboratoire Central des Ponts et Chaussées” and near the “Bassin des carènes” a French Navy Laboratory. I thought immediately that somebody in this laboratory preferred to sell it rather than to put it on the scrap heap. Moreover, some papers in the box of the apparatus shown that it was studied by a naval engineer after WWII. For these reasons I attempted first to establish the bibliography with the help of the library of the “Musée de la Marine” in Paris and also with the site of Dennert and Pape on the Web. It was unsuccessful. > Unfortunately my wife died in July 2004 and obviously it was uneasy for me to continue my research at this time ; then I had to send my copy in its current state to the editor. > Yet, you may read in the first page that I recognize this insufficiency and also the necessity to find more information about the MHR-1. > If somebody in the Group accepts to translate in English this paper I would suggest, not to translate it exactly but to rewrite it in English with some improvements and with a larger bibliography. I would suggest also to work together, the translator and I, and consequently to sign together. > I gave the MHR-1 at the beginning of 2006 to the “Arithmeum” in Bonn, Germany. > I must apologize for my poor English. It is the opinion of my son in law and of my young grand-daughter who are Americans. > > With my best regards, > > Serge Savoysky, D ès Sc. 22, allée Danton 91270 Vigneux. 01 69 03 12 74.