Tone_variator_from_Max_Kohl_Catalogue,_rack_and_pinion_design.png (141 × 382 pixels, file size: 54 KB, MIME type: image/png)
Tone variator in which the bottom of the resonator is not displaced by a spiral, but by rack and pinion; in these, an excentrically-operated pointer is used to indicate the frequency on the scale.
Source: Kohl, Max. Physical Apparatus / Vol. II. Apparatus and Supplies for General Use. Introduction to Physics. Mechanics. Wave Theory. Acoustics. Optics. Heat. Meteorology. Cosmology. Chemnitz, Germany. p 446.
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current | 02:44, 2 July 2006 | 141 × 382 (54 KB) | Brian0918 (talk | contribs) | ||
02:39, 2 July 2006 | 141 × 382 (20 KB) | Brian0918 (talk | contribs) | Tone variator in which the bottom of the resonator is not displaced by a spiral, but by rack and pinion; in these, an excentrically-operated pointer is used to indicate the frequency on the scale. Source: Kohl, Max. ''Physical Apparatus'' / Vol. II. |
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