from The Century Dictionary.
- noun A mathematical instrument for measuring angles in surveying; a semicircle.
Sorry, no etymologies found.
The recording graphometer, with its characteristic scratchy noise, identified the position of the ship as a red dot on the insert card.
A microscopic graphometer, not much larger than the palm of one's hand and costing perhaps five francs, was provided by the establishment.
-- was not without a certain satisfaction as I piously carried that most delicate and precious apparatus, the historic five-franc graphometer.