Site.Ropp1892 History
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20 July 2013
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26 February 2012
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The 1892 World's Fair Edition of Ropp's Commercial Calculator book in this collection contains128 pages of useful mathematical facts, formulas and tables. The covers have creases, rubbing and edge and corner wear. The spine has been torn at the top and bottom. The edges of the pages are colored with red ink which is not unusual in a late 1800's reference book. The book shows its age but is all intact with no loose pages or obvious decay.
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The 1892 World's Fair Edition of Ropp's Commercial Calculator book in this collection contains 128 pages of useful mathematical facts, formulas and tables. The covers have creases, rubbing and edge and corner wear. The spine has been torn at the top and bottom. The edges of the pages are colored with red ink which is not unusual in a late 1800's reference book. The book shows its age but is all intact with no loose pages or obvious decay.
11 December 2011
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'+Ropp's Commercial Calculator: a practical arithmetic for practical purposes, containing a complete system of useful, accurate, and convenient tables, together with simple, short, and practical methods for rapid calculation, 1892+'
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"Ropp's Commercial Calculator: a practical arithmetic for practical purposes, containing a complete system of useful, accurate, and convenient tables, together with simple, short, and practical methods for rapid calculation", 1892
11 December 2011
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Changed lines 3-4 from:
'+Ropp's Commercial Calculator: a practical arithmetic for practical purposes, containing a complete system of useful, accurate, and convenient tables, together with simple, short, and practical methods for rapid calculation, 1892
to:
'+Ropp's Commercial Calculator: a practical arithmetic for practical purposes, containing a complete system of useful, accurate, and convenient tables, together with simple, short, and practical methods for rapid calculation, 1892+'
11 December 2011
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'+Ropp's Commercial Calculator: a practical arithmetic for practical purposes, containing a complete system of useful, accurate, and convenient tables, together with simple, short, and practical methods for rapid calculation, 1892
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The 1892 World's Fair Edition of Ropp's Commercial Calculator book in this collection contains128 pages of useful mathematical facts, formulas and tables. The covers have creases, rubbing and edge and corner wear. The spine has been torn at the top and bottom. The edges of the pages are colored with red ink which is not unusual in a late 1800's reference book. The book shows its age but is all intact with no loose pages or obvious decay.
to:
The 1892 World's Fair Edition of Ropp's Commercial Calculator book in this collection contains128 pages of useful mathematical facts, formulas and tables. The covers have creases, rubbing and edge and corner wear. The spine has been torn at the top and bottom. The edges of the pages are colored with red ink which is not unusual in a late 1800's reference book. The book shows its age but is all intact with no loose pages or obvious decay.
For more on Ropp's Commercial Calculator see:
* http://www.nzeldes.com/HOC/RoppCalc_Letter.htm
For more on Ropp's Commercial Calculator see:
* http://www.nzeldes.com/HOC/RoppCalc_Letter.htm
11 December 2011
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Changed lines 1-3 from:
%center% http://meta-studies.net/pmwiki/uploads/Ropp.png
Until reliable and cheap calculators could become broadly available most calculation was carried out with the help of tables published in ready reckoners of one sort or another. The Ropp ready reckoners were widely used for this purpose in the USAuntil the mid-twentieth century.
Until reliable and cheap calculators could become broadly available most calculation was carried out with the help of tables published in ready reckoners of one sort or another. The Ropp ready reckoners were widely used for this purpose in the USA
to:
%center% http://meta-studies.net/pmwiki/uploads/Ropp.jpg
Until reliable and cheap calculators could become broadly available most calculation was carried out with the help of tables published in ready reckoners of one sort or another. The Ropp ready reckoners were widely used for this purpose in the USA right into the twentieth century.
The 1892 World's Fair Edition of Ropp's Commercial Calculator book in this collection contains128 pages of useful mathematical facts, formulas and tables. The covers have creases, rubbing and edge and corner wear. The spine has been torn at the top and bottom. The edges of the pages are colored with red ink which is not unusual in a late 1800's reference book. The book shows its age but is all intact with no loose pages or obvious decay.
Until reliable and cheap calculators could become broadly available most calculation was carried out with the help of tables published in ready reckoners of one sort or another. The Ropp ready reckoners were widely used for this purpose in the USA right into the twentieth century.
The 1892 World's Fair Edition of Ropp's Commercial Calculator book in this collection contains128 pages of useful mathematical facts, formulas and tables. The covers have creases, rubbing and edge and corner wear. The spine has been torn at the top and bottom. The edges of the pages are colored with red ink which is not unusual in a late 1800's reference book. The book shows its age but is all intact with no loose pages or obvious decay.
11 December 2011
by -
Added lines 1-3:
%center% http://meta-studies.net/pmwiki/uploads/Ropp.png
Until reliable and cheap calculators could become broadly available most calculation was carried out with the help of tables published in ready reckoners of one sort or another. The Ropp ready reckoners were widely used for this purpose in the USA until the mid-twentieth century.
Until reliable and cheap calculators could become broadly available most calculation was carried out with the help of tables published in ready reckoners of one sort or another. The Ropp ready reckoners were widely used for this purpose in the USA until the mid-twentieth century.