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How Do You Use A Three-Sided Drafters Ruler?

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How Do You Use A Three-Sided Drafters Ruler?

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The drafter’s ruler (also called an architect’s scale) has three sides with one or two scales along each of its six edges. One scale is measured in inches and fractions of an inch. The other scales are used to make reduced drawings. Using a three-sided drafter’s ruler isn’t too difficult if you know what to do with it. Determine the scale of the line you want to measure. In most cases, the line is part of a reduced drawing, and the scale of the drawing is indicated. Find the appropriate scale on your drafter’s ruler. Available scales on a good quality drafter’s ruler are 1/8, 3/32, 3/16, 1/4, 3/8, 1/2, 3/4, 1, 1 1/2 and 3 inches to the foot. Notice that each scale begins with 0 near the end. To one side is a series of marks (gradations) representing one inch, divided into sixteenths. On the other are gradations representing the number of inches or feet represented by 1 inch on the scale. For instance, for a 1/4 scale, a quarter of an inch represents 1 foot so the number 4 on the scale,

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