利用圖樣呈現結構物、機械與其零件，通常是為了讓負責生產該結構物或機械的藝匠或工人了解產品的工程設計內涵而製作。製圖係以正投影的原理為基礎，而正投影則是數學的分科「投影幾何學」所探討的重點。

製圖(畫圖技術)　(P,,U,繁體中文-偏好,D,U,U)
精密製圖(,U,繁體中文-非偏好,UF,U,U)
機械製圖(畫圖技術)　(,U,繁體中文-非偏好,UF,U,U)
chih t'u (P,,U,韋氏拼音-偏好,UF,U,U)
zhì tú (P,,U,漢語拼音-偏好,UF,U,U)
zhi tu (P,,U,漢語拼音(無聲調)-偏好,UF,U,U)
drafting(P,,U,英文-偏好,D,U,U)
drafted(,U,英文-非偏好,AD,U,U)
draughting(,U,英文-非偏好,UF,U,U)
engineering drawing(technique)　(,U,英文-非偏好,UF,U,U)
mechanical drawing(technique)　(,U,英文-非偏好,UF,U,U)
precision drawing(,U,英文-非偏好,UF,U,U)
Entwurfzeichnen(P,,U,German-偏好,D,U,U)
ontwerp schetsen(P,,U,荷蘭語-偏好,D,U,U)
ontwerp geschetst(,U,荷蘭語-非偏好,AD,U,U)
dibujo técnico(técnica)　(P,,U,西班牙語-偏好,D,U,U)
dibujo(técnico)　(,U,西班牙語-非偏好,AD,U,U)

藝術與建築詞典根目錄
....活動層面
........過程與技術
............<過程與技術>
................<依特定種類區分之過程與技術>
....................<圖像製作的過程與技術>
........................<繪製與繪製技術>
............................畫圖技術
................................製圖 (畫圖技術)

activity/event needing/using is....

正射投影(平行投影)

英文....	Graphical representations of structures, machines, and their component parts that communicate the engineering intent of a technical design to the craftsman or worker who makes the product. Drafting is based on the concept of orthographic projection, which in turn is the principal concern of the branch of mathematics called descriptive geometry.

製圖(畫圖技術)............	[AS-Academia Sinica]
.................	藝術名詞與技法辭典 139
精密製圖............	[AS-Academia Sinica]
.................	藝術名詞與技法辭典 359
機械製圖(畫圖技術)............	[AS-Academia Sinica]
.................	藝術名詞與技法辭典 277
drafting............	[VP]
.................	College Entrance Examination Board, Index of Majors (1985) iii
.................	CDMARC Subjects: LCSH (1988-)
.................	Webster's Third New International Dictionary (1961)
.................	Encyclopedia Britannica Online (2002-) accessed 7 April 2009
drafted............	[VP]
.................	Getty Vocabulary Program rules
draughting............	[VP]
.................	Encyclopedia Britannica Online (2002-)
engineering drawing(technique)............	[VP]
.................	Encyclopedia Britannica Online (2002-)
mechanical drawing(technique)............	[VP]
.................	CDMARC Subjects: LCSH (1988-)
precision drawing............	[VP]
.................	Quick, Artists' and Illustrators' Encyclopedia (1978)
Entwurfzeichnen............	[VP]
.................	Personal Communication
ontwerp schetsen............	[Bureau AAT]
.................	AAT-Ned (1994-)
ontwerp geschetst............	[Bureau AAT]
.................	AAT-Ned (1994-)
dibujo técnico(técnica)............	[CDBP-DIBAM]
.................	TAA database (2000-)
dibujo(técnico)............	[CDBP-DIBAM]
.................	Ching, Diccionario Visual de Arquitectura (1997) 80/81/82/83
Subject:............	[Bureau AAT]
.................	Kennedy, CAD (1986) IND; drafting, computer-aided
.................	CDMARC Subjects: LCSH (1988-) precoor.; Aircraft drafting; carpentry drafting
.................	Avery Index (1963-) Drafting--Architectural
.................	Van Dale Engels-Nederlands (1989)

Getty AAT: 300053179 Getty AAT: http://www.getty.edu/vow/AATFullDisplay?find=costume&logic=AND¬e=&subjectid=300053179
聯合目錄： 製圖 、精密製圖 、機械製圖 、chih t'u 、zhì tú 、zhi tu 、drafting 、drafted 、draughting 、engineering drawing 、mechanical drawing 、precision drawing 、Entwurfzeichnen 、ontwerp schetsen 、ontwerp geschetst 、dibujo técnico 、dibujo