Editing Rod (unit) (section)

=={{anchor|Area}}<!-- [[Square perch]] and [[Rod (area)]] redirect here-->Area and volume==
The terms ''pole'', ''perch'', ''rod'' and ''rood'' have been used as units of area, and ''perch'' is also used as a unit of volume. As a unit of [[area]], a ''square perch'' (the perch being standardized to equal {{frac|16|1|2}} feet, or {{frac|5|1|2}} yards) is equal to a '''square rod''', {{convert|30+1/4|sqyd|m2|2|abbr=off|lk=out}} or {{frac|160}} acre. There are 40 square perches to a [[Rood (measurement)|rood]] (for example a rectangular area of 40 rods times one rod), and 160 square perches to an [[acre]] (for example a rectangular area of 40 rods times 4 rods). This unit is usually referred to as a ''perch'' or ''pole'' even though ''square perch'' and ''square pole'' were the more precise terms. ''Rod'' was also sometimes used as a unit of area to refer to a rood.

However, in the traditional French-based system in some countries, 1 square ''perche'' is 42.21 square metres.

As of August 2013, perches and roods are used as government survey units in [[Jamaica]].{{cn|date=August 2024}} They appear on most property title documents. The perch is also in extensive use in [[Sri Lanka]], being favored even over the rood and acre in real estate listings there.<ref>{{cite web |url=http://www.srilankapropertymarket.com/LFS_page1.html |title=Land For Sale |website=Sri Lanka Property Market |url-status=dead |archive-url=https://web.archive.org/web/20180124203909/http://www.srilankapropertymarket.com/LFS_page1.html |archive-date=24 January 2018}}</ref> Perches were informally used as a measure in [[Queensland]] [[real estate]] until the early 21st century, mostly for historical gazetted properties in older suburbs.<ref>{{cite web |url=http://thebuzz.beesnees.com.au/tag/dutton-park-real-estate-agent/ |title=Dutton Park real estate agent Archives |website=Bees Nees}}</ref>

===Volume===
A traditional unit of volume for stone and other masonry. A perch of masonry is the volume of a stone wall one perch ({{convert|16+1/2|ft|m|2|disp=or}}) long, {{convert|18|in|cm|1}} high, and {{convert|12|in|cm|1}} thick. This is equivalent to exactly {{convert|24+3/4|cuft|cuyd m3 L|abbr=off}}.

There are two different measurements for a perch depending on the type of masonry that is being built:

#A dressed stone work is measured by the {{frac|24|3|4}}-cubic foot perch ({{convert|16+1/2|ft|m|2|disp=or}}) long, {{convert|18|in|cm|1}} high, and {{convert|12|in|cm|1}} thick. This is equivalent to exactly {{convert|24+3/4|cuft|cuyd m3|6|abbr=off}}.
#a brick work or rubble wall made of broken stone of irregular size, shape and texture, made of undressed stone, is measured by the ({{convert|16+1/2|ft|m|2|disp=or}}) long, {{convert|12|in|cm|1}} high, and {{convert|12|in|cm|1}} thick. This is equivalent to exactly {{convert|16+1/2|cuft|cuyd m3|6|abbr=off}}.<ref>See {{cite book |first1=William M. |last1=McClurg |first2=Morrell M. |last2=Shoemaker |name-list-style=amp |date=1970 |title=The Building Estimator's Reference Handbook |edition=17th |location=Chicago |publisher=Frank R. Walker Company |page=1644}}</ref>