出典:Wikipedia
出典:『Wikipedia』 (2011/06/26 09:38 UTC 版)
A ruler, sometimes called a rule or line gauge, is an instrument used in geometry, technical drawing, printing and engineering/building to measure distances and/or to rule straight lines. Strictly speaking, the ruler is essentially a straightedge used to rule lines, but typically the ruler also contains calibrated lines to measure distances.
a ruler
a ruler
the sovereign
a despotic ruler
a schemer
the successor to the throne―the heir apparent
a clansman
a retainer
a lawgiver
the chief mourner
the shogunate
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