This protractor features a built-in hand clamping groove for easy one-handed handling and quick placement. Its compact design provides convenience without sacrificing functionality. Key features - Hand clamping groove for easy pick up, positioning, and removal - Compact and lightweight design for portable use and easy storage - Dimensions: length 7 cm, width 7 cm, height 1 cm - Suitable for home, household, dorm, and office tasks - It consists of a protractor with a hand clamping groove Use scenarios - Woodworking and home improvement: mark and verify angles on cuts and joints with minimal setup - Arts, crafts, and school projects: align pieces and verify angles for precise layouts and drawings - Office or dorm drafting and layout tasks: perform quick angle checks and minor angle-based measurements for small projects This description maintains the original product specifications and function, while presenting clear benefits and practical applications in a straightforward, professional tone.