Features Multi-Purpose Testing Tool: Ideal for various applications, these clips are perfect for electrical testing and circuit experiments, enhancing your versatility in the lab or field Exceptional Conductivity: Crafted from high-quality brass, these clips ensure excellent conductivity, providing reliable performance for extended use in all your electrical projects Safe and Reliable Design: Featuring insulated construction with weldable wire, these test clamps guarantee safety during operations, minimizing risks while you work Superior Specifications: Rated for 30A current and 1000V voltage, with a 20mm opening and 4mm rear hole diameter, these clips meet rigorous standards for professional use User-Friendly Operation: Easily connect to your test equipment and begin testing immediately, streamlining your workflow and boosting efficiency in your electrical tasks Features: 1、Universal angle ruler, 360 degree comprehensive measurement. 2、 stainl steel material, good rigidity, no deformation. 3、Multi？purpose measuring tool, angle ruler and ruler in one. 4、The locking knob is convenient to lock the angle at any position. 5、Digital display, digital display reading is more convenient. 6、CR2032 3V lithium battery power supply (not included), replaceable battery. Specification: Item Type: Digital Angle Ruler Material: Stainl Steel Color: As shown in the picture Measuring Range: 0.00°~ 999.9° Working Temperature: 0℃ ~ +50℃ Working Humidity: ≤85%RH Working Current: ≤20uA (more than 5000 hours of continuous use) Resolution: 0.05°/ 3' Accuracy: 0.3° Power Supply: CR2032 3V lithium battery (not included) Package List: 1 x Digital Angle Ruler(Battery Not Included) 1 x Instruction Manual Package List 1 x Digital Angle Ruler(Battery Not Included) 1 x Instruction Manual