Sorry if this has been asked before. I'm trying to get some real-world measurements of props in Poser. I have several of the free ruler props but none have the same scaling. I also have an old prop called "two-meter" which is for measuing figure hight but I'm not sure if that is scaled correctly either. 

maybe I've overlooked something in the Poser ref manual?

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740