- Architect's scale
An architect's scale is a specialized ruler designed to facilitate the drafting and measuring of architectural drawings, such as floor plans and orthographic projections. Because the scale of such drawings are often smaller than life-size, an architect's scale features multiple units of length and proportional length increments.
For accuracy and longevity, the material used should be dimensionally stable and durable. Scales were traditionally made of wood, but today they are usually made of rigid plastic or aluminium. Architect's scales may be flat, with 4 scales, or have a symmetric 3-lobed cross-section, with 12 scales.
United States and Imperial units
In the United States, and prior to metrification in Britain, Canada and Australia, architect's scales are/were marked as a ratio of x inches-to-the-foot (typically written as x"=1'-0"). For example one inch measured from a drawing with a scale of "one-inch-to-the-foot" is equivalent to one foot in the real world (a scale of 1:12) whereas one inch measured from a drawing with a scale of "two-inches-to-the-foot" is equivalent to six inches in the real world (a scale of 1:6). It is not to be confused with a true unitless ratio (inches to inches)-- a 1:50 architectural scale would be a 1:60 unitless scale.
Typical scales used in the United States are:
- Full scale, with inches divided into sixteenths of an inch
The following scales are generally grouped in pairs using the same dual-numbered index line (one scale is read from the right, and the other scale is read from the left):
- three-inches-to-the-foot (3"=1'-0") (ratio equivalent 1:4)/one-and-one-half-inch-to-the-foot (1½"=1'-0") (1:8)
- one-inch-to-the-foot (1"=1'-0") (1:12)/one-half-inch-to-the-foot (1/2"=1'-0") (1:24)
- three-quarters-inch-to-the-foot (3/4"=1'-0") (1:16)/three-eighths-inch-to-the-foot (3/8"=1'-0") (1:32)
- one-quarter-inch-to-the-foot (1/4"=1'-0") (1:48)/one-eighth-inch-to-the-foot (1/8"=1'-0") (1:96)
- three-sixteenths-inch-to-the-foot (3/16"=1'-0") (1:64)/three-thirty-seconds-inch-to-the-foot (3/32"=1'0") (1:128)
Architect's scale rulers used in Britain and other metric countries are marked with ratios without reference to a base unit. Therefore a drawing will indicate both its scale (ratio) and the unit of measurement being used.
In Britain, for flat rulers, the paired scales often found on architect's scales are:
For triangular rulers, the paired scales are:
Less common scales are:
Wikimedia Foundation. 2010.
Look at other dictionaries:
Scale model — A scale model of the Tower of London. This model can be found inside the tower … Wikipedia
Scale — NOTOC Scale can refer to:ystems of representation* Duraton scale, an ordering of time intervals from shortest to longest * Measurement, referring to the size of buildings or other structures * Scalability, a system s capacity to adapt to changes… … Wikipedia
architect's ruler — noun A scale ruler … Wiktionary
Engineer's scale — An engineer s scale is a tool for measuring distances and transferring measurements at a fixed ratio of length. It is commonly made of plastic and is just over twelve inches (300 mm) long, so that the measuring ticks at the edges do not become… … Wikipedia
Weighing scale — Emperor Jahangir (reign 1605 1627) weighing his son Shah Jahan on a weighing scale by artist Manohar (AD 1615, Mughal dynasty, India). A weighing scale (usually just scales in UK and Australian English, weighing machine in south Asian English or… … Wikipedia
John Douglas (architect) — For other people of the same name, see John Douglas (disambiguation). John Douglas John Douglas, photograph published in 1890 Born 11 April 1830(1830 04 11) Sandiway … Wikipedia
City Architect of Birmingham — The City Architect of Birmingham was a high ranking position within the Public Works department of Birmingham City Council and provided the holder with a lot of power in the planning decisions of Birmingham, especially in the post war period in… … Wikipedia
Robert Lawson (architect) — Robert Arthur Lawson (1 January 1833 ndash; 3 December 1902) was one of New Zealand s most eminent 19th century architects. He has been described as the architect who did more than any other to shape the architectural face of New Zealand s… … Wikipedia
Henry Price (architect) — Infobox Architect image size = caption =(John) Henry Price, c. 1905 name =Henry Price nationality =English birth date =1867 birth place =England death date =death date|1944|04|10 death place = alma matter = practice name =Manchester City… … Wikipedia
Charles Rose (architect) — Charles Rose Charles Rose Born April 27, 1960 (1960 04 27) (age 51) New York City, U.S … Wikipedia