1. CHAPTER 3: Drafting Equipment
Mrs. Kampf
Engineering Graphics I

2. Drafting Board Drawing sheet attached to it. 9X12, 16X21 or 18X24
Wood with vinyl cover
Stay flat and straight

3. T-Square A head that lines up with a true edge of the drafting board
Straightedge provides a true edge
Metal, wood with plastic

4. Triangles Used with t-square 45° has a 90° angle and two 45°
30° -60° triangle has a 30° a 60° and a 90°

5. Protractor
Used to measure or lay out angles
right, acute, obtuse

6. Irregular Curves French curves
Used to draw noncircular curves like spirals and ellipses.

7. Templates
Save time in drawing shapes of details.

8. Vellum
Tracing paper that has been treated to make it more transparent.

9. ANSI
American National Standards Institute

10. ISO
International Standards Organization

11. Paper Size A - Letterhead 8.5” X 11” Size B - Tabloid 11” X 17”
Size C - 17” x 22”
Size D - 22” X 34”
Size E - 34” X 44”

12. Case instruments
Drawing instruments that come in a set.

13. Dividers
Lines can be divided and distances can be transferred with this
Bow and Friction-joint

14. Compass True circles or arcs can be drawn with this
Bow and Friction-joint

15. Bow instruments
Can be adjusted with either a center wheel or a side wheel
Easy to use and accurate.

16. Graphite pencils 17 degrees of hardness or grades
Grade you use depends on paper type, line weight and darkness of lines made
6B to 9H, #2/HB is middle
Hardness, Blackness, Fine Point

17. Eraser
Vinyl erasers for film, kneaded, pink pearl, gum, Magic rub

18. Erasing shield Use to avoid erasing nearby lines accidentally
Plastic or metal and have different size and shape openings

19. Scales Instruments used to lay off distances and make measurements
Full size or some proportion
Scaled.

20. Architect’s scale Inch Scale
Divided into proportional feet’ and inches”
Used for drawing buildings

21. Mechanical Engineer’s scale
Inches and fractions of an inch divided to represent inches
Use for drawing machine parts

22. Civil Engineer’s scale
Inches divided into decimals
Units could be inch, feet, miles etc
Used for maps and drawings of roads