Definition

1. Noun:
   • Theodolite: A precision optical instrument used in surveying and engineering to measure horizontal and vertical angles. It is called "máy kinh vĩ" in Vietnamese, where "kinh vĩ" is the core term referring to the instrument's function of measuring longitude (kinh) and latitude (vĩ).

Usage Examples

• Noun:
  • Kỹ sư sử dụng kinh vĩ để đo đạc chính xác góc trên công trường. (The engineer uses a theodolite to measure angles precisely on the construction site.)
  • Máy kinh vĩ là thiết bị không thể thiếu trong trắc địa. (The theodolite is an indispensable device in surveying.)

Advanced Usage

• "Đo bằng kinh vĩ": to survey/measure with a theodolite.
  • Toàn bộ khu đất được đo bằng kinh vĩ trước khi lập bản đồ. (The entire land plot was surveyed with a theodolite before mapping.)

Variants and Related Words

• Máy kinh vĩ: The full and more common term for "theodolite". "Kinh vĩ" is the shortened, technical form.
• Máy trắc địa: Surveying instrument (a broader category that includes theodolites).
• Kính ngắm: Telescope sight (a component of a theodolite).

Synonyms

• Surveyor's transit: An older type of theodolite.
• Angle measuring instrument: A general descriptive term.

Related Phrases (Technical Context)

• Lắp đặt kinh vĩ: to set up a theodolite.
  • Việc lắp đặt kinh vĩ phải đảm bảo thật cân bằng. (Setting up the theodolite must ensure perfect leveling.)
• Ngắm kinh vĩ: to sight/take a reading with a theodolite.
  • Anh ấy đang ngắm kinh vĩ về phía cột mốc. (He is sighting the theodolite towards the benchmark.)

Related Idioms

(This is a highly technical term, so it does not commonly appear in idiomatic expressions. Its usage is confined to professional and technical contexts.)

1. (Máy kinh vĩ) Theodolite