[See TACHYGRAPH and -METER.] (See quot. 1900.)
1891. Rep. U.S. Coast Geodetic Survey, App. 16.
1900. H. M. Wilson, Topogr. Surveying, xiii. 280. There are two forms of this instrument [Wagner-Fennel Tachymeter]…. The first of these … corresponds to a transit, and the second to an alidade. The latter called a tachygraphometer, for use with the plane-table.
