We have a few of our own Hackspace Units (HI) that can be used at the space.
OA - Outstretched Arms
A measurement of length, roughly equivalent to the the average height of a hacker
B/m2 - Bum's per Meter square
A measurement of efficiency, used to tell how effectively chairs and sofa's use our finite floor space.
SF - Severed Finger
A handy unit of length measurement used to specify safe parameters for power tool usage.