MKM Decorating Disks 4" are a super useful set of 4 inch (10 cm) disks designed to allow users to divide space easily and quickly. They come in a set of two (odd divisions and even divisions) sturdy flexible transparent sheets. They can be used to evenly space handles, to initiate brushwork, to create multi-sided plates, mark throwing bats, and so on.
Each Decorating Disk has its own even or odd segmented divisions. Use the concentric circles to quickly center your piece. Colored radial lines indicate even divisions (2, 4, 6, 8, 10, 12) on one decorating disk and odd divisions (3, 5, 7, 9) on the other decorating disk.
The secret is the holes. Along the radial lines are holes that allow a potter to mark through the decorating disk to the soft, leather hard, or bisqued clay. Place an MKM Decorating Disk on top of, (or underneath) the pot/surface, center it and mark through the holes to the clay.