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This article describes the history & uses of the Hoppus's Measurer: a book of early wood frame construction tables & guides for the mathematically disinclined.
First published in 1736, the Hoppus's Measurer, or Measuring Made Easy to the Meanest Capacity, provided a new set of tables which promised to give the solid content of any piece of timver, stone or other building material, square or round, and the data needed to set the material value at any price per cubic foot.
Our page top photo shows our copy of the Hoppus Measurer book as well as several antique carpenter's tools.
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History & Uses of the Hoppus's Measurer: early wood frame construction tables & guides for the mathematically disinclined
The English surveyor Edward Hoppus was an English surveyor known for having introduced the the Hoppus, an eponymous unit in his 1736 manual of practical calculations. The copy of the Hoppus's Measurer shownin this article has lost the initial dated page but the book compares with a London version published by A. Spottiswoode, New Street Square, in 1837.
[Click to enlarge any image or table]
My copy of the Hoppus Measurer (shown here) was published in Edinburgh by Oliver and Boyd, Tweeddale Court, and was well-used. The book, owned by A. Butcher, was shaped to fit nicely into the back pocket of a carpenter or estimator. The result of long use has given this copy a nice curve.
The tables in my copy of the Hoppus's Measurer are described by Hoppus as including reference to stone as well as timber, as stone can similarly suffer wastage during processing into regular pieces.
Hoppus Volume (hft) = (Mid Quarter Girth in ins.)^2 X Length (ft) / 144
One hoppus foot = 1.273 true ft3; 27.74 h ft = 1 m3; and 1 h ft = 0.03605m3. A hoppus foot is approximately 21% oversize compared with a true cubic foot. - Wikipedia retrieved 10/27/2013 
Continue reading at ROOF AREA CALCULATIONS or select a topic from the More Reading links shown below.
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