Something that is made of both Imperial and Metric parts. These (usually old vehicles) can be difficult to work on, because to do the job properly at least 2 sets of the same tools are needed.
Gary: Can you pass me that weird spanner again?
Steve: The 13/16? Yeah ok...
Gary: Immetrical landrover crap
Steve: The 13/16? Yeah ok...
Gary: Immetrical landrover crap
by mongoosander May 28, 2010
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Descriptor similar to tubular or righteous, generally used in approval, derived from a mix-up between empirical and imperial
by WiiTripper December 22, 2023
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