These were a mystery to me in my childhood days. Nothing has changed.

by Psorosis

4 comments
  1. How could you not understand a butchers slide rule? Perfect tool for measuring the length of a sausage dog.

  2. It helps you price something given its wieght. If something costs 40 pence, or four pounds, or four francs per kilo, you look at the 40 indicator to quickly get the price. For 41 pence you either split the difference between 40 and 42 or you just don’t price things an odd amount.

Leave a Reply