But her treatment - despite the brutality, unfairness and flaws - at least followed a rough approximation of the law of the land.

But still we know, to a rough approximation, nothing.

A similarly rough approximation of telekinesis can be achieved using 'programmable matter' made of the tiny chips called catoms.

While the first unofficial standard gauges made interchangeability possible, the rolling stock were still only a rough approximation of the full scale prototype.

These may be assembled in a stack to obtain a rough approximation of the terrain.