Material: The plastic caliper is made of high-quality plastic, which is light and stable and can be used for a long time. which never deform and are lighter than steel, precise measurements can reduce unnecessary errors. Convenient installation: The plastic caliper is divided into two parts, the caliper and the fixed disc. The caliper can be pressed directly into the slot of the fixed disc. The operation is simple and convenient to use. Easy to Carry: Convenient and easy to take with you, no sharp edges on the measuring jaws and stored safely in your pocket and taken anywhere, takes up no space. The ease of movement of the sliding mechanismguarantees quick and easy measurement and reading. Measuring range: 0-80 mm (0-3.15 inches), accuracy up to 0.015 mm. Two readings, cm and inches for easy reading, provide an accurate reading between graduations on a linear scale. Increase resolution and reduce uncertaintymeasurement/human estimation error. Suitable for: It is used to measure button diameter, seedling diameter, jewel jadeite, etc. It is light and practical and does not scratch the object to be inspected. Can also be used as a teaching aid. Features: - The plastic caliper is made of high-quality plastic, which is lightweight, stable and can be used for a long time. - The maximum measuring range of the mini caliper is 80 mm (3.15 inches), which allows the precise measurement of small and medium-sized items and has a high level of practicality. - Peripheral polishing, the edge area pocket caliper has been polished to make the edges smoother, to fully protect objects. - Use this smooth sliding vernier for quick inside, outside, step and depth measurements. - Ideal for jewelers, measurements, teacher teaching, etc. Use for science projects or permanent makeup tattoo eyebrow line science projects. Specification: Material: plastic Colors: orange Measuring range: 0-80 mm (0-3.15 inches) Package consisting of: 6 * calipers luckymeet