Pottery Tool: Sitta (Bisque) For pots, large bowls, and plates. Mouth 218, Base 166, Height 130, Weight 2000g How to use: 1. Apply clay to the mouth and base, then wrap clay around the mouth. 2. Place the Sitta on the potter's wheel and secure it with clay. 3. Scrape the surface of the mouth to center it. 4. Apply water and press to shape and scrape. The hole in the body of the Sitta is for scraping the inside of the foot. Tapping it will produce a "pon-pon" sound, indicating the thickness. The pot in the photo has a body diameter of 250mm. Suitable for large plates and bowls, especially those of a shaku (approx. 30cm) size. This item was used for many years in a pottery class. It is no longer needed, so please, someone use it.