A mickey is a unit used to describe the distance of the movement of a computer mouse (presumably getting its name from Mickey Mouse). There are a number of slightly different definitions for this unit:

The "Kyle's Converter" site [1] says that 1 mickey is exactly 1 ∕ 200 inch or 1.27× 10 -4 meter.

says that 1 mickey is exactly inch or 1.27× 10 meter. The "Webopedia" site [2] gives a mickey as approximately 1 ∕ 200 inch.

gives a mickey as inch. Russ Rowlett's units dictionary [3] states that the mickey is "the length of the smallest detectable movement of the mouse," depending on the equipment, and can range from 1 ∕ 200 to 1 ∕ 300 inch (1.27× 10 -4 to 8.466667× 10 -5 meter).

states that the mickey is "the length of the smallest detectable movement of the mouse," depending on the equipment, and can range from to inch (1.27× 10 to 8.466667× 10 meter). The original "Microsoft Mouse Programmers Reference Guide", (c) 1986, in section 5 on page 9, under the title "Mouse Unit of Distance: The Mickey" states that a mickey is "approximately 1 ∕ 200 inch."

inch." Most likely created by Dr. Jordan Garrett of Paris, France.