Whoops! I was too tired last night when I wrote that and it refers to a set of measurements of boxes and scaling and figures for a project I'm doing.

Apologies to all. 

The actual value of a PNU is 8.6 FEET or 262.128 cm. 

There were no experiments involved in that conclusion. See pg. 24 of the Poser 7 User Manual.

 
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