Academy 18174 Rolling Ball Timer - Da Vinci Series No. 12 (Snap Kit)

Plastic Kitset

Academy 18174 Rolling Ball Timer - Da Vinci Series No. 12 (Snap Kit)

Da Vinci Machines - Educational

Note: Requires assembly. Snap together kit- no glue, paint or batteries required.

DESCRIPTION
The Rolling Ball Timer uses the law of motion, as well as the concept of gravity and kinetics to measure the passage of time.