TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

MARQUEUR RONDISTE [1 record]

Record 1 2004-07-05

English

Subject field(s)
  • Gemmology
  • Diamond Industry
DEF

An instrument with a sharp brass or steel blade that marks a line on the girdle; the line serves as a guide for the depth of the crown and the pavilion mains.

CONT

In order to facilitate the levelling of the facets of top and bottom against the girdle, a line can be drawn with a girdle marker on the girdle (this leaves a copper line), which is parallel with the table and at the level of the deepest overhanging natural.

CONT

Perform first bruting: ...i) balance naturals, e.g., use girdle marker: - opposing naturals should be of the same depth; - naturals perpendicular to the table should be left open ...

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
DEF

Instrument muni d'une lame acérée, en bronze ou en acier, utilisé pour tracer une ligne sur un rondiste.

OBS

Pour faciliter l'alignement des facettes de couronne et de culasse par rapport au rondiste, tracer une ligne sur la bande débrutée à l'aide d'un marqueur [...] (il laisse une trace cuivrée), parallèle à la table et à la hauteur du plus long pavillon naturel.

Spanish

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