Tuning Forks
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SONOMETRE |
| Code:GP - 573.1 |
Comprising a hollow wooden box 1140x125x100mm length x width x height with 2 metre rules, 1 metre long divided in mm. Two wires of brass and steel attached to fixed bridge and tensioned by fine adjustment pegs, two movable Bridges, Pulley and fixed screw to enable a third wire to be fixed for tensioning by masses. Complete, with 2 Bridges.
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TUNING FORKS SET BLUE STEEL |
| Code:GP - 574.1 |
Set of 8 of blue steel, plain shank, one each of C(256) D,E,F,G,A,B,C (512) in velvet lined box.
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TUNING FORK SET OF 13 |
| Code: GP - 575.1 |
Chrome plated with frequency marked, a set of 13 of different frequency from 256C to 512C, packed in velvet lined box.
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TUNING FORK SET OF 13 |
| Code: GP - 575.2 |
Same as above made of aluminium alloy rustless.
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SET OF FOUR FORKS ON BOX |
| Code: GP - 577.1 |
For demonstrating the formation of a basic major chord. Comprises four forks mounted on a common box and having frequencies of C 256Hz, E 320Hz, G 384Hz and C 512Hz. When sounding together, therefore, the forks produce the chord of C major.
Dimensions of Resonance Box : 285x115x63mm LxWxH.
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BEATS APPARATUS |
| Code: GP - 578.1 |
Pair of tuning forks. A (426.6) mounted on individual resonance boxes. One fork fitted with sliding mass. With hammer.
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ORGAN PIPE SLIDING |
| Code: GP - 584.1 |
With graduated sliding piston. The organ pipe is of a square section, of polished wood and fitted with a tapered mouthpiece.
The slider is also square in section,32x32mm, of wood and with a knob at the end for easy control. The slider has a scribed and lettered line for each note which may be aligned with the end of the pipe to give a diatonic scale from c 256 to c 512.
Overall Dimensions : closed 540x50x50mm.
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ORGAN PIPE |
| Code: GP - 585.2 |
Open ended, square section, with tapered mouthpiece. The organ pipe is of a polished wood and has an air column length of 405mm approximately, which gives a note approximating to A 426.
Overall Dimensions: 520x50x50mm<br />
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RESONANCE APPARATUS, SIMPLE FORM |
| Code: GP - 594.2 |
For measuring the resonant length of an air column driven by a tuning fork. Comprises a brass tube 290 x 25mm dia fixed to a base 150x150x20mm with a sliding inner tube 300mm long which allows the length of the column to be varied from 350 to 530mm.
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RESONANCE TUBES |
| Code: GP - 594.3 |
Comprising two glass tubes, one 300x32mm dia the other 300x25mm dia. The smaller tube slides within the other in foam plastic collars, allowing the air column length to be varied from 300 to 530mm.
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