Can be used as a proportion ruler and is an important addition to your art design materials. Design, item size: 16 * 4cm. Made of stainless steel with a satin finish. It is designed and durable. The function is and it will last a long time, will perfectly suit your needs. It also comes with a case that protects it from damage. The size is perfect and the accuracy is, the caliper will be accurate from your control to within a few tenths of a millimeter. The golden ratio phi 1: 1.618. It occurs many times in geometry, art, architecture and other fields. especially useful for human body measurements. This caliper is also for measuring eyebrow dimensions. These calipers are precise, light and manufactured. The caliper has been designed with customer needs in mind. The curved style is comfortable to hold, adjustable and light. It is completely reusable and can be. Color: Silver Material: Stainless steel Package contents: 1 * caliper Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to differ a little from the real thing. The allowed measurement error is +/- 1-3 cm.