Features: There are 4 pieces mini caliper, 4 different colors, Black/Light Blue/Red/White, meeting all kinds of needs. Precision measuring instrument for delicate items - essential tool for jewelers. Precision sliding gague measures up to 3" (80mm) in increments of 1/128" (0.05mm). Scale marked in Centimeter,Vernier Design will measure inside and outside of object. Suitable for Permanent Makeup Tattoo Eyebrow Line Lip or science projects. Specifications: Material: Plastic Size: 107x45x22x9x7mm/ 4.21x1.77x0.86x0.35x0.27 in Color: Black/ Light Blue/Red/White Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 4x Mini Calipers