Question

If the distance between the 2 and the 3 and the 6 and the 7 on a scale are equal, the scale would likely be at least:

Answer 1

The scale is likely linear, with equal divisions between consecutive integers.  Two and three differ by one, as do 6 and 7.  Both "ones" are represented on the scale by equal distances.

There are many scales, such as logarithmic, on which equal differences are represented by UNEQUAL distances.