Pica
Unit of length
The pica is a typographic unit of measure corresponding to approximately 1⁄6 of an inch, or from 1⁄68 to 1⁄73 of a foot. One pica is further divided into 12 points.
In printing, three pica measures are used:
The French pica of 12 Didot points... Wikipedia
1 pica in: is equal to
imperial/US units: 1/6 in
metric (SI) units: 4.2333 mm
typographic units: 12 points
Unit of: Length
Unit system: Typographic unit
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