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The rod or perch or pole is a surveyors tool and unit of length equal to 5 1⁄2 yards, 16 1⁄2 feet, 1⁄320 of a statute mile or one-fourth of a surveyor's chain and 5.0292 meters.
The mickey is a unit used to describe the distance of movement of a computer mouse (presumably getting its name from Mickey Mouse). There are a number of slightly different definitions for this unit.