Scales, Continued
Types of scales
Architect scales are the most common in a Navy Drafting shop, followed by
the chain or civil engineer’s scale. Mechanical engineer’s scales are also
found in some shops.
ARCHITECT’S SCALE: This scale is the most common because it
measures increments in terms of feet and inches. It has eleven scales on six
scale faces. All scale faces are double numbered except for the 16 scale
which stands alone. The 16 scale equates to a standard ruler. The architect’s
scale is open divided with the fully subdivided increment divided into 12
(inches). Lay off feet using the main scale to the right of the 0 mark. Lay
off inches from the subdivided increment to the left of the 0 mark.
Figure 2-62 shows the scales on an architect’s scale.
Figure 2-62. —Faces on an architect’s scale.
Continued on next page
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