| << Viewing Record 1278 of 1323 >> View : Light Box | List View | Image List | Detailed |
|
ID number: BIRRC-P0014 Institution: Research and Cultural Collections Named collection: Historic Physics Collection Artist / Maker: Rheinische Apparatebaugesellschaft m.b.h. Title / Object name: Vibrating Reed Frequency Meter Object type: Vibrating Reed Frequency Meter Place made: Ludwigshaven A’Rh, Germany Date made: 1909 Materials: Various in polished wooden case Measurements: 20 x 20 x 10.5 cm |
|
|
The instrument is for determining the frequency of electrical signals in the range 25 to 55 ‘periods per second’ (i.e. Hz). It contains 61 vibrating reeds tuned to frequencies in this range at intervals of 0.5 Hz. The ends of these appear at the front of the instrument, so that it would be simple to observe which reed responds to the applied signal. Inscriptions / Translations: Rheinische Apparatebaugesellschaft m.b.h., Ludwigshaven A’Rh Sole agents: Isenthal & Co. London |
|
| << Viewing Record 1278 of 1323 >> |