The Spark Timer offers high performance in a compact design. This versatile instrument works well in a vertical position for falling-body experiments. The recording needle is immediately raised when the timer is turned off to allow easy insertion or removal of tape. Two settings (10 and 60Hz) provide clear printed results to appear, even for relatively slow moving dynamic carts. The needle pressure is adjustable for increased accuracy. The blinking LED and sound signal indicates that the timer is on. A rubber padded clamp and one roll of spark tape are included (1 cm x 40 meters).