That square on the back really isn't necessary if you line the inside of the sheath, the look is much cleaner.
I use a 3 ounce lining leather on the inside and 7/8 on the outside. The rivet is the "small" size, I can measure out one if you need. The head is smaller than the standard ones as well. Now Tandy carries an ultra small rivet, tiny little buggers, I cant for the life of me figure out what they are for.
Quote for the week: Some cause happiness wherever they go; others whenever they go. Oscar Wilde.