Lauretta J. Fox
Measurement
is essential in every phase of building, from the planning stage to the actual construction work. The instrument used to measure objects is the
ruler
. The architect must use a ruler to produce accurate drawings. Carpenters and other construction workers must use a ruler to obtain measurements for lumber, piping and other necessary materials.
Rulers are divided into inches and fractions of inches. On the ruler shown below every inch is divided into sixteen equal sections, each of which is one sixteenth of an inch long.
(figure available in print form)
We read the designated measurements as follows:
A= 4/16 or 1/4 inch
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D = 2 inches
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B= 9/16 inch
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E = 2 11/16 inches
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C=1 5/16 inches
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F = 3 12/16 or 3 3/4 inches
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Exercises
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1. Draw line segments having the following measurements: a) 2 7/9 “ b) 15/16 “ c) 1 3/4 “ d) 5 1/2 “.
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2. Give the ruler reading for each of the lettered dimensions.
(figure available in print form)