Feature:1. The operation is simple and easy to use. And this caliper is suitable for measuring the size when making ceramics, such as measuring the belly diameter or caliber.2. Made of high-quality solid wood, such wooden ruler is durable with exquisite craftsmanship.3. A variety of specifications, you can choose based on your needs. And caliper supports flexible operation and better feel.4. Via many inspections before leaving the factory, distance measuring tool's quality is guaranteed.5. Built to strict quality control standards, this pottery tool's design is improved for more durability.Specification:Item Type: CaliperProduct Material: Solid woodProduct Use: Ceramic production measurementPattern: 8-Inch Wooden Caliper / 10-Inch Wooden Caliper / 12-Inch Wooden Caliper (optional).Package List:1 x Wooden Ruler