How to check the size of your hat midway
Checking the size of your hat as you go

I often check the size of a hat -- even before I reach the magic 6-in. mark.
However, before reaching a depth of 6 inches, the hat has a curved bottom edge, so I use a flexible ruler or a tape measure to "walk around" the flattened hat.
This measurement is half of the circumference, so just multiply by 2 to get the total circumference.
However, before reaching a depth of 6 inches, the hat has a curved bottom edge, so I use a flexible ruler or a tape measure to "walk around" the flattened hat.
This measurement is half of the circumference, so just multiply by 2 to get the total circumference.