Site.SlideRuleDesign1670 History
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03 January 2012
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03 January 2012
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This page shows three existing designs for logarithmic proportional rules. The right most (titled Mechanische Rechen Kunst and bearing also the initials MLBMC of its maker) is effectively a Gunter scale and dividers would be used to perform multiplications or divisions using the scale.[^a diagram of this %center% http://meta-studies.net/pmwiki/uploads/staebe1.JPG is shown at "Rechenschieber mit logarithmischen Skalen" [[http://www.rechenwerkzeug.de/staebe.htm]] (viewed 2 Jan 2012)^] The left two are slide rules.
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This page shows three existing designs for logarithmic proportional rules. The top most (titled Mechanische Rechen Kunst and bearing also the initials MLBMC of its maker) is effectively a Gunter scale and dividers would be used to perform multiplications or divisions using the scale.[^a diagram of this %center% http://meta-studies.net/pmwiki/uploads/staebe1.JPG is shown at "Rechenschieber mit logarithmischen Skalen" [[http://www.rechenwerkzeug.de/staebe.htm]] (viewed 2 Jan 2012)^] The lower two are slide rules.
03 January 2012
by -
Changed line 3 from:
This page shows three existing designs for logarithmic proportional rules. The right most (titled Mechanische Rechen Kunst and bearing also the initials MLBMC of its maker) is effectively a Gunter scale and dividers would be used to perform multiplications or divisions using the scale.[^a diagram of this %center% http://meta-studies.net/pmwiki/uploads/staebe1.jpg is shown at "Rechenschieber mit logarithmischen Skalen" [[http://www.rechenwerkzeug.de/staebe1.htm]] (viewed 2 Jan 2012)^] The left two are slide rules.
to:
This page shows three existing designs for logarithmic proportional rules. The right most (titled Mechanische Rechen Kunst and bearing also the initials MLBMC of its maker) is effectively a Gunter scale and dividers would be used to perform multiplications or divisions using the scale.[^a diagram of this %center% http://meta-studies.net/pmwiki/uploads/staebe1.JPG is shown at "Rechenschieber mit logarithmischen Skalen" [[http://www.rechenwerkzeug.de/staebe.htm]] (viewed 2 Jan 2012)^] The left two are slide rules.
03 January 2012
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William Oughtred published his design for a slide rule in 1632. A series of designs followed. In 1727 Jacob Leupold published the "Theatrum Arithmetico-Geometricum"[^A scanned version of this book may be downloaded from [[http://ia600304.us.archive.org/33/items/theatrumarithmet00leup/theatrumarithmet00leup.pdf]] (viewed 3 Jan 2012)^] of which Table XII (page 241) is held in this collection (see below).[^This page was held in a German family and placed on auction on ebay in January 2012, after the seller's grandfather, an art collector, who had held it and had it restored, passed away.^]
This page shows three existing designs for logarithmic proportional rules. The right most (titled Mechanische Rechen Kunst and bearing also the initials MLBMC of its maker) is effectively a Gunter scale and dividers would be used to perform multiplications or divisions using the scale.[^a diagram of this %center% http://meta-studies.net/pmwiki/uploads/staebe1.jpg is shown at "Rechenschieber mit logarithmischen Skalen" [[http://www.rechenwerkzeug.de/staebe1.htm]] (viewed 2 Jan 2012)^] The left two are slide rules.
This page shows three existing designs for logarithmic proportional rules. The right most (titled Mechanische Rechen Kunst and bearing also the initials MLBMC of its maker) is effectively a Gunter scale and dividers would be used to perform multiplications or divisions using the scale.[^a diagram of this %center% http://meta-studies.net/pmwiki/uploads/staebe1.jpg is shown at "Rechenschieber mit logarithmischen Skalen" [[http://www.rechenwerkzeug.de/staebe1.htm]] (viewed 2 Jan 2012)^] The left two are slide rules.
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This object was held in a German family and placed on auction on ebay in January 2012, after the seller's grandfather, who had held it and had it restored, passed away. More details of provenance are held but cannot be published in the interests of maintaining privacy of the previous owner.
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02 January 2012
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%center% http://meta-studies.net/pmwiki/uploads/Henrion.
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%center% http://meta-studies.net/pmwiki/uploads/SlideRuleDes1670.jpg
02 January 2012
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%center% http://meta-studies.net/pmwiki/uploads/Henrion.png
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%center% http://meta-studies.net/pmwiki/uploads/Henrion.
02 January 2012
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The construction of the slide rule was published by William Oughtred in 1632. This is an extracted page from a book published ~1670 showing the detail of such a slide rule.
This object was held in a German family and placed on auction on ebay in January 2012, after the seller's grandfather, who had held it and had it restored, passed away. More details of provenance are held but cannot be published in the interests of maintaining privacy of the previous owner.