tachymetern.

/taˈkɪmɪtə/

Forms: Also tachyometer.

Etymology: modern < Greek ταχύς swift + -meter comb. form²; so French tachymètre (1836; 1839; a form more on Greek analogies than tacheometer n.).

Name of a surveying instrument, adapted to the rapid location of points on a survey.

ΘΚΠ

the world > the earth > earth sciences > geography > map-making > surveying > [noun] > surveying instruments > for the rapid location of points on a survey

tachymeter1860

tacheometer1876

1860 R. G. Mayne Expos. Lexicon Med. Sci. Tachymeter, term for an instrument for quickly measuring level surfaces.

1891 Buff & Berger Handbk. Engin. & Surv. Instr. 109 The name Tachymeter, or rapid measurer, has been applied for many years, in Europe, to instruments of this description.

1900 H. M. Wilson Topogr. Surveying xiii. 282 A most satisfactory tachymeter, both for filling in details on large-scale maps, and for carrying on rough geographic or exploratory surveys.

Derivatives

tachyˈmetric adj.

ΘΚΠ

the world > the earth > earth sciences > geography > map-making > surveying > [adjective] > of instruments for surveying > relating to specific instruments

dioptricala1613

dioptric1625

pertical1625

tacheometric1900

tachymetric1900

1900 H. M. Wilson Topogr. Surveying xii. 236 There are practically two systems of tachymetric measurement: The angular or tangential system; and The stadia, telemeter, or subtend system.

taˈchymetry n. the use of such an instrument.

ΘΚΠ

the world > the earth > earth sciences > geography > map-making > surveying > [noun] > specific methods or processes

dialling1670

traverse1674

boning1718

levelling1812

triangulation1818

resection1855

plane-tabling1867

stepping1888

tacheometry1888

tachymetry1891

trilateration1948

1891 Buff & Berger Handbk. Engin. & Surv. Instr. 109 Tachymetry.

1900 H. M. Wilson Topogr. Surveying xii. 236 Tachymetry, or, as it is sometimes called, tachyometry..enables the operator, by a single observation upon a rod, to obtain the necessary horizontal and vertical data for the determination of the three elements of position of a point on the surface of the earth.

This entry has not yet been fully updated (first published 1910; most recently modified version published online June 2021).

单词	tachymeter
释义	tachymetern. /taˈkɪmɪtə/ Forms: Also tachyometer. Etymology: modern < Greek ταχύς swift + -meter comb. form²; so French tachymètre (1836; 1839; a form more on Greek analogies than tacheometer n.). Name of a surveying instrument, adapted to the rapid location of points on a survey. ΘΚΠ the world > the earth > earth sciences > geography > map-making > surveying > [noun] > surveying instruments > for the rapid location of points on a survey tachymeter1860 tacheometer1876 1860 R. G. Mayne Expos. Lexicon Med. Sci. Tachymeter, term for an instrument for quickly measuring level surfaces. 1891 Buff & Berger Handbk. Engin. & Surv. Instr. 109 The name Tachymeter, or rapid measurer, has been applied for many years, in Europe, to instruments of this description. 1900 H. M. Wilson Topogr. Surveying xiii. 282 A most satisfactory tachymeter, both for filling in details on large-scale maps, and for carrying on rough geographic or exploratory surveys. Derivatives tachyˈmetric adj. ΘΚΠ the world > the earth > earth sciences > geography > map-making > surveying > [adjective] > of instruments for surveying > relating to specific instruments dioptricala1613 dioptric1625 pertical1625 tacheometric1900 tachymetric1900 1900 H. M. Wilson Topogr. Surveying xii. 236 There are practically two systems of tachymetric measurement: The angular or tangential system; and The stadia, telemeter, or subtend system. taˈchymetry n. the use of such an instrument. ΘΚΠ the world > the earth > earth sciences > geography > map-making > surveying > [noun] > specific methods or processes dialling1670 traverse1674 boning1718 levelling1812 triangulation1818 resection1855 plane-tabling1867 stepping1888 tacheometry1888 tachymetry1891 trilateration1948 1891 Buff & Berger Handbk. Engin. & Surv. Instr. 109 Tachymetry. 1900 H. M. Wilson Topogr. Surveying xii. 236 Tachymetry, or, as it is sometimes called, tachyometry..enables the operator, by a single observation upon a rod, to obtain the necessary horizontal and vertical data for the determination of the three elements of position of a point on the surface of the earth. This entry has not yet been fully updated (first published 1910; most recently modified version published online June 2021). < n.1860
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