An engineer's
scale is a tool for measuring distances and transferring measurements at a fixed ratio of length. ... Referred to as
1:10,
1:
20,
1:30,
1:40,
1:50 or
1:60
scale. Typically in civil engineering applications,
1:10 (
1--=10--)is used exclusively for detail drawings.
1:
20 and
1:40
scales are used for working plans.
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