Product Number: SB31088
In Stock (Ships within 1-2 business days)
Use this hardwood AC recording timer to determine velocity, acceleration, and friction with the precision of an electric clock. Timer places carbon dot on moving paper every 1/60 second. Includes timer, 500-ft. roll of paper, 24 carbon circles, 1-m cord with on/off switch, and instructions. Plugs directly into 110V outlet.