I agree with the above, but especially with Ockham. I model my vehicles to exact real world dimensions, and scale them correctly for Poser.

Once in Poser, I try to make characters fit into cars, or on motorbikes, etc. On the DKW-8 car that I built it was impossible to fit Vicki or Mike into the car, I had to scale the car to 110% to make their legs fit.

Part of the reason for this is that real people can "make themselves smaller", or squeeze into a space, whereas digital models are too difficult to pose like this. If anyone has been to an antique car show you will notice that the spaces in the cars where a lot smaller than in modern cars.

With military models, such as tanks or armoured cars, the problem is even worse. I have been to museums and struggled to fit into the seats on tanks, mini subs, etc, (I am 6") and in Poser it is impossible to make Poser characters fit into these vehicles without either scaling the character or the vehicle.

But in general I agree that modellers are not paying enough attention to scaling, I have seen models with stairs that are either twice the height of a normal stair, or half the height, or windows built into walls that are too low, that a character standing at the window would have to duck to see out of it. 

Your specialist military, sci-fi, historical and real world site.