[kraftman]

I just tried a few 7s with dashes and it got them all, how big a dash do you use?

[wastedhours]

Just tried it with my usual length dash (extending 3/4 along the top line to the left, and about 1/4 out the other side) and it returned a 3. Used a smaller dash and it returned a 7. Exceptionally neat tool though and seriously impressive!