For eyebrow use: With our plastic double scale rulers, it is convenient for you to measure and locate eyebrows and make sure the eyebrows Eyebrows, eyeliner and lips are positioned symmetrically, so you can easily determine the position, length and size of them. Lightweight and portable: the property of this tattoo eyebrow ruler Allows you to carry it, when you are traveling, vacationing and visiting, you can put it in your small suitcase, backpack, toolbox and so on to weigh you down. Note : Sharp and small objects included, please keep away from children. : Mini caliper Model number: eyebrow ruler Type: eyebrow tools Type: for student desk br>Type: Vernier caliper Color: as shown Material: plastic + metal Package content: 5 x Caliper Only the following package -above, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The allowable measurement error is +/- 1-3 cm.