Quote - ...besides I know very little about Amsterdam, and nil about how you would use metres or even feet and inches, in Wings...

I don't anything about Amsterdam either, Fran.
As for the measurements; scale is arbitrary (look at imports D|S -> Bryce6; a tree comes up to V3's knees.), you can change it any time, without affecting the contour of the geometry. AFAIK, It is only important for Poser props and morph targets' and maybe some atmospheric render effects.
Just let 'Unit' replace meter: 1.000000 Wings unit equals a meter. Or 10 Wings units = a meter, depending on how big you like to work. Numeric inputs make that fairly easy.  You can use any scale you want, as long as you keep everthing to the same scale. Somebody can normalize the scale of everything later.
All sorts of things to do besides models anyhow.

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koosievantutte, I meant a grid layout to the streets from an overhead view. From your photographs of Dordrecht, you can see the streets aren't a straight grid. When stacking individual blocks(sections) together it will be hard to make the streets be anything but a grid and still have them line up with each other. Sloping streets will be a problem too (if there are any?).
The only solution I can think of off hand is to not have mix & match blocks; rather, have a specific layout. The Terrain (ground plane) contour and waterline edges would have to be layed out as a single object, then cut into pieces to make the sections. The streets would need to be layed out and 'plots' marked for the individual buildings.
I'm not a civic engineer, so I could wrong about all this, or needlessly overcomplicating it.

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