What are the previous forms of measurement?

Answer 1

There are plenty of measurement units that have largely fallen into disuse; here's a few:

pole, perch or rod - 5 1/2 yards, a chain is 22 yards (or four rods). A cricket pitch is 1 chain in length.

There are 10 chains to a furlong - horse races are still run over furlongs.

A barleycorn is a third of an inch; shoe sizes are measured in barleycorns.