JSS1 Basic Technology Lesson Note on Drawing Instrument and Materials

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TOPIC: Drawing Instrument and Materials

SUB-TOPICS:

1. Definition of technical drawing.
2. Drawing Instrument and Materials

Content Development (NOTES FOR FIRST LESSON/PERIOD ONE)

Sub-Topic 1: Definition of Technical drawing

Technical drawing is a universal language used for communication among technical people.  A good and accurate drawing can only be made through constant practice with the aid of drawing instruments and materials. Technical drawing can also be defined as a language of communication making use of lines, curves, symbols, and conventions.

Sub Topic 2: Drawing Instrument and Materials

Drawing instruments and materials for technical drawing are:

1. Drawing board
2. Tee square
3. Sets squares
4. Protractor
5. Compasses
6. Dividers
7. Drawing paper clips
8. Scale rules
9. French curves
10. Metric rules
11. Drawing paper
12. Drawing pencils
13. Eraser
14. Sharpener or blade
15. Flexi curves
16. Scale rule
17. Metal clip
18. Lettering set

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