Durable: Mini sliding calipers are made of plastic with internal metal strips for added strength, making them durable and suitable for long-term use. Applicable occasions: A measuring tool ideal for measuring diameter of small round items such as buttons, jewelry, and other small objects. Non-scratch design protects items during measurement. Lightweight and portable. Easy to use: Dual-scale design allows for clear and accurate readings. Easily measure depth, width, and length with 5.9-inch (approximately 15.0 cm) calipers. Size: Mini dual-scale calipers are approximately 21 cm in total length, with a measuring range of 05.9 inches (0.015.0 cm), meeting everyday measuring needs. Color: Black Material: Plastic Package Contents: 10 x Mini dual-scale plastic calipers Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting and monitor settings may cause slight color variations between the image and the actual product. Measurement error allowance is +/- 13 cm.