Application Site: This eyebrow tattoo ruler suitable for both individual practice and professional tattoo salon. This tattoo eyebrow ruler can help to accurately position in eyebrow shaping and get a pair of symmetrical satisfaction brows. With the help of this eyebrow tattoo ruler, it brings an intimate feeling, your indispensable. Upgraded Version: Upgraded arched eyebrow ruler, suitable for designing various eyebrow shapes. Beautiful appearance and precise in place, convenient and practical. Easy to carry, can effectively help reduce asymmetry, easy to do eyebrow makeup work every day. Creating high-quality makeup starts here. Sturdy and Durable: The bow shaped ruler is sturdy and durable, and can be reused without deformation. It is portable and easy to carry with your cosmetic bag or purse, just use it at home or on a trip, convenient to make your lovely eyebrow shape. Beginners can quickly use it to trace the perfect eyebrow contour. Safe Use: The cotton thread can be replaced, which is safer and healthy. The eyebrow tattoo ruler is fully reusable and safe to your skin. The golden ratio ruler microblading calipers use to measure, locate and shape equal eyebrows on both sides of the face. Just enjoy it!. Accurate Positioning: This eyebrow tattoo ruler with high‑quality horizontal measuring ruler design, with a horizontal observation device in the middle of the arch ruler, the positioning is more accurate, and the drawn eyebrow shape is more symmetrical. Perfect makeup tools for tattoos stylists and those who are interested in painting eyebrow.