Misplaced Pages

This article is an orphan, as no other articles link to it. Please introduce links to this page from related articles; try the Find link tool for suggestions. (August 2019)

A circular measure was used in comparing circular cross-sections, e.g., of wires, etc. A circular unit of the ares is the area of the circle whose diameter is one linear unit.

For example, 1 circular mil is equivalent to 0.7854 square mil in area, 1 circular millimeter = 1550 circular mils = 0.7854 square millimeter. Here ${\displaystyle 0.7854=\pi /4.}$

References

1. ^ "Civil Engineer's Pocket-Book" p. 889, Wiley, 1904

This standards- or measurement-related article is a stub. You can help Misplaced Pages by expanding it.

• v
• t
• e

• Units of measurement
• Standards and measurement stubs