Assertion: flue's diameter | /r/HasProperty | 155.5 mm
Facets:
Source sentences:
text: The vertical axis represents how many semitones up or down a stop deviates from Normal Scaling (NS), in which (a) the pipe diameters halve on the seventeenth note inclusive, and (b) the internal diameter of the bottom C pipe is 155.5 mm or 6.122 inches.