The Go Science Crazy spark timer is a recording device used to measure the velocity and acceleration of a falling or moving object.

• Spark timer device
• 60 Hz (mains power frequency)
• Tape length: 45 m
• Tape width: 17 mm

The Go Science Crazy spark timer sparks at uniform intervals, leaving marks on a paper tape. The distance between the marks on the tape are used to calculate velocity and acceleration. It is provided with a roll of tape, a carbon disc, a weight, and a clamp to hold it in position.

Everything on the spark timer is enclosed for safety.