TLE 9 (Technical Drafting) - Alphabet of Lines
Transcript of TLE 9 (Technical Drafting) - Alphabet of Lines
![Page 1: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/1.jpg)
Alphabet of Lines
![Page 2: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/2.jpg)
ALPHABET OF LINES Lines are the critical component
of sketching Lines have different types,
thickness and shape has its own meaning
Alphabet of Lines are also known as “Line symbols”
![Page 3: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/3.jpg)
![Page 4: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/4.jpg)
![Page 5: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/5.jpg)
![Page 6: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/6.jpg)
OBJECT OR VISIBLE LINE Thick, dark line used to show
the outline of the object. Define features you can see in a particular view
![Page 7: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/7.jpg)
CONSTRUCTION LINE Lines that are very light and
very thin use to construct layout work
![Page 8: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/8.jpg)
DIMENSION LINE Thin and dark lines use to show
the size (span) of an object with a numeric value. Usually terminates with arrowheads or tick markings.
![Page 9: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/9.jpg)
HIDDEN LINE Short dash lines use to show non
visible surfaces that are not visible in orthographic view. Usually shows as medium thickness.
![Page 10: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/10.jpg)
CENTRE LINE Long and shot dash lines.
Usually indicates centre of holes, circles and arcs. Line is thin and dark.
![Page 11: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/11.jpg)
EXTENSION LINE A light line that extends from the
edge or end of a main object line on a drawing, used in conjunction with dimension lines to help determine the dimension of a particular feature.
![Page 12: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/12.jpg)
CUTTING PLANE LINE Extra thick line use to show
cutaway views or plane of projection where a section view is taken. Arrow indicates direction of view.
![Page 13: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/13.jpg)
LEADER LINE A thin line used to connect a
dimension line with a particular area or point on the drawing. It is also use to show notes or labels.
![Page 14: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/14.jpg)
PHANTOM LINE Long line followed by two short
dashes use to show alternate position of a moving part.
![Page 15: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/15.jpg)
SHORT-BREAK LINE Thick wavy line that is used to
break the edge of a surface of a part for clarity on a hidden surface
![Page 16: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/16.jpg)
LONG-BREAK LINE Long, thin lines that is used to
show that the middle section of an object has been removed so it can be drawn on a smaller piece of paper
![Page 17: TLE 9 (Technical Drafting) - Alphabet of Lines](https://reader036.fdocuments.us/reader036/viewer/2022081414/589e044e1a28ab67278b4771/html5/thumbnails/17.jpg)