from The Century Dictionary and Cyclopedia
- n. An instrument for measuring very slight earthquake-shocks, or vibrations of the earth's surface such as are sometimes called earth-tremors; a microseismograph.
Sorry, no etymologies found.
What you require to make the records is a seismograph with large but exceeding light indices, or a Perry tromometer ....
Professor Galli's seismodynamograph registered a very slight movement at 10 P.M., and at Rome itself Professor de Rossi found a tromometer making unusual oscillations at 10.15 P.M. [