| Physics Instruments >> Sound & Wave |
| WAVE FORM HELIX, LONG |
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| Cat no. : |
07408 |
| Steel wire close-wound helix of about 19mm diameter and closed length ... |
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| WAVE MACHINE, POWELL'S |
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| Cat no. : |
07426 |
| For demonstrating the movement of progressive transverse waves. Compri... |
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| WAVE MACHINE |
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| Cat no. : |
07429 |
| For demonstrating the movement of progressive transverse and longitudi... |
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| WAVE MACHINE |
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| Cat no. : |
07430 |
| Same as per Cat. No. 7429 but superior in quality.... |
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