And then using them in order and lining them up on the other side of the sink.
What's that called?
PS Apparently this runs in the family. My father writes:
My father would position a slide rule exactly equidistant from each side of a cabin drawer and I saw him adjust by a single mm with parallel pencil and carefully positioned planimeter. He also counted rivets - that is the next stage...
Hmm. On the counting rivets part, I guess that's like counting squares on the back of an airline seat.