Features Clear Digital Display: Easily read the precise angle measurements from the digital display panel, ensuring accuracy and efficiency in your work. Convenient Locking Knob: Securely lock the angle at any position with the locking knob design, allowing for stable and precise measurements without any hassle. Accurate Battery Compartment: The precise and secure battery compartment design prevents accidental battery ejection, ensuring uninterrupted work and reliable performance. Durable Plastic Construction: The high-quality plastic construction of the protractor ruler body provides sturdiness and durability, making it suitable for various fields including construction, workshop, woodworking, and home decoration. Versatile Application: Suitable for a wide range of applications including construction, workshop, woodworking, and home decoration, making it an essential tool for professionals and DIY enthusiasts. Digital Protractor Angle Ruler Finder Meter Digital Display Plastic Goniometer ZX PD290 Level up your angle measurement game with the yunyi Digital Protractor. Its crystal-clear digital display ensures precise angle readings. The locking knob feature allows you to secure the angle at any desired position, while the sturdy plastic body guarantees durability for long-term use. Suitable for various fields, this protractor is your professional go-to tool. Package List 1 x Digital Protractor