Description:
2007-1-0131a-g are seven conical flue pipes with wooden end-plugs, used for acoustics demonstration or experimentation.
The end plugs are covered with a piece of leather.
The four longer pipes (a-d) have difficult-to-read engravings, made by hand, on the metal--probably pitch indicators. The wooden plug of 2007-1-0131b is out and cannot be reinserted since the pipe's end is bent.
As with many other acoustical instruments in the collection, these have an old location number inscribed on an oval paper glued on the pipe: 20-3-9, 20-3-10, [skip 20-3-11], 20-3-12, 20-3-13, 20-3-14, 20-3-15, 20-3-16. There is another old location number stamped on every pipe: 20-7.
It is not clear that these were a proper set, and so they have been catalogued separately.