Premium Golden Mean Calipers are curved for accurate measurements Fit for Biology, Art & Math Students, Artists,, Designers, Bowl Makers and Architects Measures the Golden Mean, also known as The Golden () Ratio 1: 1.618 Designed Golden Mean Calipers Suitable for biology & art students, makeup artists, designers, artists, dentists and architects This caliper are popular for measuring eyebrow dimensions It gives more to those who are in the initial of permanent face makeup It is extensively used in Microblading and other beauty practices Golden Ratio Eyebrow Ruler is portable and easy to carry with your cosmetic bag or purse Made from stainless steel for w / It is greatly designed and The action is smooth and it will last a long for time, will fit your needs perfectly It also comes with a nice for case that protects it from damage, Manufacturer: LiRRvb