DRAFTING MATERIALS AND TOOLS, ITS USES.pptx

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1. DRAFTING MATERIALS AND TOOLS, ITS USES/FUNCTIONS

2. DRAWING PAPER Various types of papers are available for use but hard and soft surface drawing papers are highly recommended to be the best. This type does not groove easily when pressure is applied to the pencil .

3. MASKING TAPE This is used for fastening the drawing paper on the drawing table

4. PENCIL SHARPENER Pencils should be sharpened whenever they show sign of dullness.

5. ERASER This is used to clean the dirt of the drawing.

6. DRAWING PENCIL This one is the most important tool in drawing. It comes in various grades. The grade of pencil to be used depends on the quality of paper to be used.

7. Measuring tools

8. T - SQUARE It is a drawing instrument used when making horizontal lines. It is also used for guiding triangles when drawing vertical lines.

9. TRIANGLE It is a three-sided ruler, which typically has two equal sides meeting at a 90 degree angle and to a third side at 45, 30, including 60 degree angles. If in use, the base of the triangle must rest on the blade of the T – square.

10. COMPASS This drawing instrument is used when drawing arcs and circles. It is composed of one with the pen leg and needle point leg being held together with a handle.

11. DIVIDER Used when transferring measurements, dividing lines and arcs into the desired number of equal parts. It can easily transfer accurate measurements by adjusting the divider points.

12. RULER Used to measure distances or draw a straight lines. This drafting tool is used when drawing vertical lines.

13. PROTRACTOR It is a semi – circular instrument divided into 180 equal parts, each of which is called a degree. It is used to determine gradations of the degrees when measuring arcs, angles and circles.

14. INSTRUCTIONS : IDENTIFY THE NAME OF THE FOLLOWING DRAFTING TOOLS AND MEASURING TOOLS. CHOOSE YOUR ANSWER FROM THE GIVEN CHOICES IN THE BOX. WRITE THE LETTER ONLY. WRITE YOUR ANSWER IN A ¼ SHEET OF PAD PAPER. 1. 2. 3. 4. 5. CHOICES : A. T – SQUARE B. MASKING TAPE C. RULER D. TRIANGLE E. ERASER