Features: This electromagnetic dotting timer set includes carbonless paper and a clip, allowing for precise timing and easy recording of experimental data in physics. Made of durable metal, this complete set of electromagnetic dotting timer ensures long lasting use and reliable results in physics experiments. Designed for physics students, laboratory technicians, and anyone conducting physics experiments, this timer set provides a convenient way to accurately measure time and record data. Suitable for educational institutions, universities, and laboratories, this electromagnetic dotting timer set is perfect for conducting physics experiments and analyzing the collected data. Take your physics experiments to the next level with this versatile electromagnetic dotting timer set, offering precise timing, easy data recording, and efficient data management. Specifications: Material: Metal Color: As The Picture Shows Package Weight: approx.490g Size: approx.15x15x4cm/5.90x5.90x1.57in (More Size Detail, Please See Photo.) Package Includes: 1Pc Dotting Timer note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!