1 definition by Antonio Consorte

Top Definition
A unit of linear measure. A Rubis is 1/7 of a micron. 7 Rubis equals 1 micron. The plural of Rubis is Rubis. An extremely fine unit of measure used by precision lensmakers.
Baird: That Curve is off 3.5 microns.
Steve: Microns?! You hack, that is off 24 Rubis! We only work to the tightest tolerance here! Get your shit together!
by Antonio Consorte February 28, 2008

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