Features: Accurately measure spark intervals with the physics teaching material laboratory ticker tape timer. Perfect for physics experiments and studies. This electromagnetic tape timer apparatus provides stable and accurate measurements of spark intervals in microseconds. Durable metal constructions ensures long lasting use. Suitable for physics teachers, students, and those involved in scientific studies. Explore the worlds of physics with this valuable tool for spark experiments. Versatile for use in classrooms, laboratories, or research institutions. Discover new possibilities in your scientific endeavors with the physics teaching material laboratory ticker tape timer. Dive into the world of electromagnetism and uncover new knowledge with the physics teaching material. Push the boundaries of scientific exploration. Specifications: Material: Metal Color: As The Picture Shows Package Weight: approx.502g Size: approx.12x16x5cm/4.72x6.29x1.96in (More Size Detail, Please See Photo.) Package Includes: 1Pc Ticker- Ticker- Tape 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!