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عرض 2101–2115 من أصل 2205 نتائج
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Tuning Forks, Set Of 2
The forks have threaded shanks and will screw in the box tops. Frequency of each is A (426). One fork is fitted with a sliding mass to alter its frequency. On sounding both forks, a clear beat is produced. Supplied with one hammer. Size of box 180 x 88 x 53 mm approx.
SKU: PH36137 - Uncategorized
Tuning Forks, Set Of 2, Superior
Set of two resonance boxes with extra heavy aluminium forks having double the duration of audible vibration than the ordinary forks. One fork is weighted and can be adjusted over range of about 30 Hz. forks are of different lengths 19.4 cm and 17.5 cm approx.
SKU: PH36140 - Uncategorized
Twin Tone Bar Set
To demonstrate resonance, sympathetic vibrations and beat phenomenon. The two precision-made bars are mounted on a single solid resonance cavity. The cavity has two chambers with one bar tuned to 440 Hz, the other to 441 Hz. Includes: hammer and instructions.
SKU: PH36152
