水中驅動器 JAPAN

防水好力用筆芯電池發動,付吸盤把驅動器吸附
在小船底部,小船便可驅動, 可用坐解釋牛頓力學定律。
直徑24mm x 120mm L
Item no : JP 1-124-120

Underwater propeller Japan
Battery operated, with sucker to attach the bottom of small boat
to propel the boat. Propeller can be used to explain Newton Law
Dia. 24mm x 120mm L
Item no : JP 1-124-120

 

@@@ KELAB 嘉里達科儀教具 www.KELABHK.com @@@