How Do You Measure For a Drum Head?
by wesley
(jaccsonvillefl.)
What do you measure when you have to buy a new drum head?
ANSWERHi, Wesley--
Measure from the outside edge of the shell to the opposite outside edge (diameter). Do not include the metal ring. Heads are measured in inches, so if you come up with something in between, you probably need to measure again.
There is a discussion about buying drum heads at:
Hints for Tuning Drums Lynne