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Lesson 1 Common Drafting Tools, Instruments and Equipment: Trivia

This document provides information about common drafting tools and how to properly care for them. It lists the most important tools used in drafting like pencils, triangles, T-squares, French curves, compasses, dividers, ruling pens, erasers, drafting tape, and protractors. It also provides guidelines for drafting students on how to properly handle and store the tools to keep them in good condition and extend their useful life. The document emphasizes cleaning tools before and after use, keeping pencil points sharp, using tools only for their intended purposes, and storing everything in a dry, clean, and safe location.

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John Alvin Soriano
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184 views3 pages

Lesson 1 Common Drafting Tools, Instruments and Equipment: Trivia

This document provides information about common drafting tools and how to properly care for them. It lists the most important tools used in drafting like pencils, triangles, T-squares, French curves, compasses, dividers, ruling pens, erasers, drafting tape, and protractors. It also provides guidelines for drafting students on how to properly handle and store the tools to keep them in good condition and extend their useful life. The document emphasizes cleaning tools before and after use, keeping pencil points sharp, using tools only for their intended purposes, and storing everything in a dry, clean, and safe location.

Uploaded by

John Alvin Soriano
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Lesson 1

Common Drafting Tools, Instruments and Equipment


You are about to start learning the most common tools in drafting. These tools will
make you draw easier and faster. Try your best to know these tools by heart because
you
will use them in your activities after this lesson.
1. The pencil is considered the most important tool of a draftsman. A draftsman is
person
who draws plans for architect or engineers. You cannot start your drawing without a
pencil. There are three (3) grades of pencils as shown in the table below:
Grade Symbol Uses
1. Hand
2. Medium
3. Soft
H Mechanical Drawing like
plans of building & house
Lettering
Freehand sketching like
charcoal rendering
Trivia:
Mechanical Drawing – a type of drawing which uses drawing tools and instruments
Freehand Drawing – a type of drawing which does not use any tool or equipment
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2. Triangles are used for drawing vertical and inclined lines with the aid of a t-square.
There
are two kinds of triangles 30 x 60 and 45 x 45.
3. T-square is a drawing tool that is used for drawing horizontal lines only. The head of
the
T-square is always anchored at the left side of the drawing table.
Removable Head Fixed Head Adjustable Head
4. French curve is a tool used for drawing irregular curve lines. It is made of celluloid
material and can be bought in art supplies shops just like the triangles.
5. Set of Drawing Instruments
Compass – an instrument used for drawing circles and arcs.
Divider – an instrument used for transferring measurements.
Ruling pen – an instrument used for inking straight lines.
Small screwdriver – an instrument used for tightening screws of the compass and
divider.
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6. Eraser – instrument used for rubbing off mistakes drawn.
7. Drafting tape is used for fastening the drawing paper on the drawing board. The most
commonly used tape is the masking tape for it does not destroy the surface of the
paper.
8. Protractor is a tool used for accurate angle measurement of lines. It is made of
celluloid
material or metal.
9. A drawing board is an inclined, flat and smooth surface. Its sides are angled 90 0
degrees
and this is where the drawing paper is fastened.

Lesson 2
Proper Care of Drafting Tools and Equipment
As a drafting student, you should know how to take good care of your tools,
instruments and equipment to utilize them for a long time and to serve you better. You
must
be responsible in handling them properly. Below is the list of do’s and don’ts on the
proper
care of drafting tools, instruments and equipment.
DO’S
1. Wipe the top of your drawing board
before starting to work.
2. Check and clean your tools before and
after using them.
3. Keep your pencil points sharp at all
times.
4. Use tools only for the purpose they are
made.
5. Store your tools in a dry, clean and safe
place.
WHY

1. A clean table serves a clean drawing


paper.
2. A clean tool does not smear your
drawing.
3. A sharp pencil produces sharp and neat
lines.
4. Every tool has its purpose.
5. A dry, clean and safe place extends the
life and service of your hand tools.
DON’TS
1. Do not use the edge of the T-square and
triangles as guide in cutting paper.
2. Do not sharpen your pencil on top of your
workplace.
3. Do not bite the lead of your pencils.
4. Do not drop the compass and ruling pen
and divider.
5. Do not erase on surfaces and spaces
without mistakes.

Why
1. It will break the edge of these tools and
they will not help produce straight lines.
2. The granite might contaminate the
drawing paper. It will make the surface
dirty.
3. Lead is poisonous. It retards the brain.
4. It might cause a nick on the ribs of the
instruments.
5. A surface rubbed by an eraser tends to
ink bleed and smear

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