Numerical precision

I have a terrain that is 128x128 pixels. This means that when exporting the mesh, the coordinates require 7 digits after the decimal place, since 1/128 = 0.0078125. However, formats such as OBJ and STL only support 6 digits after the decimal place, which ends up being lossy.

How can I work around this problem? It would be great if I could scale all the coordinates up such that they do not use any decimal places at all.

Thanks.

I think this question can be linked with mine - http://forum.world-machine.com/index.php?topic=3590.0