The Gvolatee Digital Carbon Fiber Caliper is a professional tool for precise measurement. With a measurement range of 0 to 6" / 150 mm, it is perfect for use at home, school, workshop, and factory. It features a large easy-to-read LCD screen and can display measurements in inches or millimeters. Additionally, it has a zero function that allows resetting the measurement value. Made with carbon fiber composite material, it is lightweight and portable. It includes 2 batteries and a plastic case for storage and protection.