Hi thanks for the help. I have just checked the Rhino site and the price it is 995 Euros and 995 dollars (EU users always get ripped off

) I am not looking do model to absolute pricision, maybe to withing a mm or two. I would just like to be able to model to real world dimensions.
Amapi is near ideal (both in price in feature), but the dimension tools disappear once I start editing the object. I also cannot move something say 15 mm, it is the arbitrary internal unit that I cannot scaled 1:1 to a real world unit (using the preference pane).
I am happy with regular modellers for artistic modelling, but when I am doing piece of techinical work, I really need to be able to measure out what I am creating.
How do you guys find ViaCad? Does MOI have dimensions now? When I looked it did not.