InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.
History & photos of the Hoppus' Measurer Book:
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.
We also provide a MASTER INDEX to this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need.
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 hoppus cubic foot (or ‘hoppus cube’ or ‘h cu ft’) was the standard volume measurement used for timber in the British Empire and countries in the British sphere of influence before the introduction of metric units. It is still used in the hardwood trade of some countries.
This volume measurement was developed to estimate what volume of a round log would be usable timber after processing, in effect attempting to ‘square’ the log and allows for waste. The hoppus ton (HT) was also a traditionally used unit of volume in British forestry. One hoppus ton is equal to 50 hoppus feet or 1.8027 cubic metres. Some shipments of tropical hardwoods, especially shipments of teak from Myanmar (Burma), are still stated in hoppus tons. - Wikipedia retrieved 10/27/2013 
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.
To estimate the volume of timber in round logs Hoppus defined the Hoppus volume as shown in his text and given below:
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 closely-related articles below, or see our complete INDEX to RELATED ARTICLES below.
Try the search box below or CONTACT US by email if you cannot find the answer you need at InspectApedia.
Ask a Question or Search InspectApedia
Use the "Click to Show or Hide FAQs" link just above to see recently-posted questions, comments, replies, try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly.
Wikipedia provided background information about some topics discussed at this website provided this citation is also found in the same article along with a " retrieved on" date. NOTE: because Wikipedia entries are fluid and can be amended in real time, we cite the retrieval date of Wikipedia citations and we do not assert that the information found there is necessarily authoritative. Retrieved, information on Hoppus Measurer 10/27/2013.
Books & Articles on Building & Environmental Inspection, Testing, Diagnosis, & Repair
Carson, Dunlop & Associates Ltd., 120 Carlton Street Suite 407, Toronto ON M5A 4K2. Tel: (416) 964-9415 1-800-268-7070 Email: email@example.com. The firm provides professional home inspection services & home inspection education & publications. Alan Carson is a past president of ASHI, the American Society of Home Inspectors. Thanks to Alan Carson and Bob Dunlop, for permission for InspectAPedia to use text excerpts from The Home Reference Book & illustrations from The Illustrated Home. Carson Dunlop Associates' provides extensive home inspection education and report writing material.
The Illustrated Home illustrates construction details and building components, a reference for owners & inspectors. Special Offer: For a 5% discount on any number of copies of the Illustrated Home purchased as a single order Enter INSPECTAILL in the order payment page "Promo/Redemption" space.
TECHNICAL REFERENCE GUIDE to manufacturer's model and serial number information for heating and cooling equipment, useful for determining the age of heating boilers, furnaces, water heaters is provided by Carson Dunlop, Associates, Toronto - Carson Dunlop Weldon & Associates Special Offer: Carson Dunlop Associates offers InspectAPedia readers in the U.S.A. a 5% discount on any number of copies of the Technical Reference Guide purchased as a single order. Just enter INSPECTATRG in the order payment page "Promo/Redemption" space.
The Home Reference Book - the Encyclopedia of Homes, Carson Dunlop & Associates, Toronto, Ontario, 25th Ed., 2012, is a bound volume of more than 450 illustrated pages that assist home inspectors and home owners in the inspection and detection of problems on buildings. The text is intended as a reference guide to help building owners operate and maintain their home effectively. Field inspection worksheets are included at the back of the volume.
Special Offer: For a 10% discount on any number of copies of the Home Reference Book purchased as a single order. Enter INSPECTAHRB in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.
Special Offer: Carson Dunlop Associates offers InspectAPedia readers in the U.S.A. a 5% discount on these courses: Enter INSPECTAHITP in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.
The Horizon Software System manages business operations,scheduling, & inspection report writing using Carson Dunlop's knowledge base & color images. The Horizon system runs on always-available cloud-based software for office computers, laptops, tablets, iPad, Android, & other smartphones