Precision eyebrow ruler for accurate mapping and consistent results Key benefits Accurate positioning: precisely locates reference points to reduce eyebrow asymmetry and produce balanced shapes. Adjustable compass design: easily adapts to different face shapes and eyebrow styles so you can plan and reproduce a variety of brow designs. Durable stainless steel: solid construction that resists rust and wear, stays firm during use, and has a long usable life. Simple and fast to use: intuitive operation works well for beginners and experienced technicians, helping streamline brow mapping and client consultations. Product highlights Function: mapping and marking of eyebrow start, arch, and end points for shaping, trimming, or permanent makeup setup. Compatibility: suitable for makeup artists, estheticians, permanent makeup technicians, tattoo artists, and anyone who shapes eyebrows. Form factor: compact, handheld compassstyle ruler that can be adjusted to match individual facial proportions. Performance: stable adjustment mechanism and clear reference points enable repeatable placements and improved symmetry. Practical use scenarios Microblading and permanent makeup: preprocedure mapping to establish symmetrical anchor points and communicate the planned shape with the client. Salon brow shaping: guide work when waxing, threading, or trimming to ensure both brows match and follow the intended proportion. Training and practice: a teaching aid for students and novices learning eyebrow design principles and technique consistency. How to use Adjust the compass to match the client face proportions. Mark key reference points for start, arch, and tail. Use those marks as guides for shaping, trimming, or tattoo placement. This eyebrow ruler provides a straightforward, durable, and adjustable solution for precise brow mapping and consistent shaping across repeated uses.