Mechanical Drafting

Drafting is said to be the universal language of industry and modern technology. It is through the application of special lines and symbols that drafter’s use so that technical people cancommunicate.

Through drawings, ideas and designs are transferred between draftsmen, architects andengineers.

Pre- assessment test LG 1 Direction: Select the drafting material and tools/drawing instruments applicable to a specific job described in each item.

1. A drafting tool used for drawing horizontal linesA. Compass B. Triangle C. T- square D. Triangular Scales

2. The drafting material used for fastening the drawing paper on the drawing table A. Compass B. Divider C. Masking Tape D. Triangle

3. The main function of this tool is to reproduce the measurements of an object in a reduced or enlarged size. A. Compass B. Protractor C. Triangle D. Triangular Scales

4. This drafting tool is used to protect the rest of the drawing when removing unnecessary lines. A. Erasing Shield B. Eraser C. Masking Tape D. Pencil Sharpener

5. This drafting tool is used when drawing vertical lines.A. Compass B. Triangle C. Triangular Scales D. Ruler

Directions: Below are some basic knowledge in drawing/drafting materials. Assessyourself by putting a star ( / ) on the YES column if you possess the competency and a star in the NO column if you don’t.

This Module is an exploratory course which leads you to Mechanical Drafting NC II.

It is designed to familiarize students with different drafting materials and tools, instruments for drawing mechanically the orthographic projection and pictorial drawing, the proper use of compass, triangle, T-square, pencils, erasers, and technical pens.

It is important to have basic knowledge and skills in orthographic views because this will beused or applied in the competencies to be mastered in Grades 9-12.

This is also designed to teach students perform basic mensuration and calculation and how to interpret simple working drawing plans and sketches;

The laboratory safety practices are also applies to make the draftsman more knowledgeablewhen it comes to the coverage of duty in the laboratory or working area.

It covers 4 common competencies that a Grade 7 & 8 Technology and LivelihoodEducation (TLE) student like you should possess, namely:

1. Preparing drafting materials and tools/drawing instruments2. Performing basic mensuration and calculation3. Interpreting working plans and sketches4. Applying safety practices

Materials T- squareTriangles 30 x 60 and 45 x 45 Pencils/ mechanical pencilsCompass/ DividerDrawing paperDrawing board

Triangular ScaleEraserErasing shieldProtractorSharpenerDrawing Tape

Group Activity:

Identify the Logo or Trademark:

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Activity: “My Trade Mark”

- Emblem or Logo Making

- a symbol or other design adopted by an organization to identify its products, uniform, vehicles, etc.

Assignment:List down 5 common DRAFTING MATERIALS AND TOOLS, ITS USES/FUNCTIONS

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