Leatherworkers, I have these sets of tapered, watch strap patterns available for order. The set includes the following tapers: 24/22mm, 22/20mm, 20/18mm, and 18/16mm. They are made from 1/4" acrylic, with laser etched markers. Each pattern comes with a hole on one end to hang up, or tie together, for organization.
PayPal (tylernewberry gmail com), $45, US shipped, international rates available. Let me know if you have any questions!