Ningbo Kelsun Int'l Trade Co.,Ltd.

Fax:+86-574-87730052 E-mail: kelsun@kelsun-cn.com

PRODUCT LIST

Product Catalog

Articulation-toothed Wheel

20200.08

Art NO.: 20200.08

With 3 thin, toothed metal wheels of 40,60 &80 teeth

respectively mounted on the same shaft. To demonstrate

in middle schools the relations between high/low tune

& vibration frequency of sound source. The higher frequency,

the higher tune.