I usually just load a box, reduce one or two sides to 1% to make a plane or a rod, and read the dials. sometimes it comes handy to use a front or left cam (non-perspective one).

surfaces of complex shapes (in cm2 or so) can be derived in Hair Room (it tells you hair density and nr of hairs, the ratio is the amount of surface), and perhaps one can find a trick with auto-balance to measure volumes directly.

 

A lot of things are in units, like bump/displacement depth in materials room, camera focal distance, hair density in hair room, and so on.

Poser geometry is exported in PNU (1 PNU=262cm).

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Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though