The Timer has a unique roller pendulum and a lever for amplitude adjustment on its backside. It is powered by the pull of a simple office rubber band, and this can be used to set the alarm on this unique piece.
Size: 6.9 x 3.3 x 10 in
Package size: 14.8 x 7.5 x 1.2 in
Number of parts: 107
Recommended Age: 14+
Kit Weight: 1.50 lbs