Tandy Leather Craftool Spacer Set System 8091-00
This set comes with 3 wheels for spacing hand stitching holes and running over completed stitches to give them a machine-sewn look. The wheels mark 5, 6 or 7 holes per inch. Also included is a screwdriver to change the wheels.  There are 10 designs of embossing wheeles that fit this habdle too. Search for Craftool Embossing Wheels.