Millimeter
A millimeter (or mm) was a metric unit of length equal to 1/1000 of a meter.

In 2377, Tuvok noted that the hologram of his wife  which Tom Paris had created to ease the symptoms of Tuvok's pon farr had ears which were four millimeters longer than that of the real woman. Paris chalked the difference up to his artistic license. ()

Comparative units of length 
 0.5 millimeters: ()
 0.5 millimeters: ()
 1 millimeter: ()
 1 millimeter: ()
 1 millimeter: ()
 2 millimeters: ()
 4 millimeters: ()
 5 millimeters: ()
 7.9 millimeter: ()
 12 millimeters: ()
 27 millimeters: ()
 88 millimeters: ()

See also 
 Cubic millimeter
 mmHg
 Square millimeter

External link 
 
Measurements