harmonometer [ˏhɑ:mә'nɔmitә]
n.
和声计
Harmonometer \Har`mo*nom"e*ter\ (-n[o^]m"[-e]*t[~e]r), n. [Gr.
"armoni`a harmony + meter: cf. F. harmonometre.]
An instrument for measuring the harmonic relations of sounds.
It is often a monochord furnished with movable bridges.