This document outlines a presentation about drafting technology. It defines key drafting terms and identifies important drafting materials and tools, including different types of drawing pencils. It also explains different types of lines used in technical drawings like visible, hidden, and dimension lines. The document provides activities for students to identify words related to drafting and complete an orthographic drawing with three standard views.

1. DRAFTING TECHNOLOGY
LEARNING OUTCOMES: At the end of this
Lesson, you are expected to do the following:
Define Drafting
Identify drafting materials and tools/drawing
instruments

2. Introduction
Mechanical drafting is the
process of creating drawings
which communicate of how
something can be constructed. It
is a way of showcasing a 3D
object on a 2D piece of paper and
it shows how the model or part
would look-like from each
direction.
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4. Definition of Terms
Assembly drawing – a drawing that shows how different
parts go together
Compass – an instrument used when drawing arcs and
circles
Delivery receipt – a form that shows proof or receipt of
goods or services
Detailed drawing – a drawing showing a single part of a
machine

5. Divider – a drawing instrument used when transferring
measurements, dividing lines, arcs into the desired number
of equal parts
Drawing – a picture, diagram made of lines, a graphic
representation of real thing, an idea or a design for production or
construction
Drawing pencil – one of the most important tools of a
draftsman, used for drawing
English system – a system of linear measurement where it is
based on standard foot
Erasing shield – used when clearing up smudges,
unnecessary pencil lines

6. Geometrical construction – the process wherein geometric
problems are solved accurately in mechanical drawings
Mechanical drafting – a process for making accurate
drawings using special drawing tools and instruments
Metric system – a system of linear measurement which it is
based on the standard meter
Orthographic drawing – the object is presented into two or
more views by projecting the outline into the planes of
projection perpendicular to each other
Pictorial view – the presentation of an object where it is
viewed showing the three faces of an object are shown

7. Protractor – used for determining gradations of the degrees
when measuring arcs and circles
Requisition form – an official form, a printed document on
which a request is made
Sketch – a quickly executed freehand drawing that is not
intended as a finished work
Triangular scale – a tool generally used when reproducing a
drawing in an enlarged or reduced version to some regular
proportion
T-Square – a drawing instrument used when drawing horizontal
and vertical lines

8. Drawing paper
Various types of drawing 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. Oslo paper is commonly
used but bond paper is also recommended.

9. Masking tape
It is used for fastening the drawing paper on the
drawing table or drawing board because it does not
damage the board and it will not damage the paper
if it is removed by pulling it off.

10. Pencil sharpener
Pencils should be sharpened whenever they show
sign of dullness. Various types and designs are
available in the store for use.

11. Eraser
This is used to clean the dirt off the drawing. A soft
eraser is advantageous in removing smudges and
pencil marks, whereas, a harder eraser is useful
for making changes and correcting errors in the
drawing.

12. Drawing pencil
This is one of the most important tools in drawing.
It comes in various grades. The grade of pencil to
be used depends on the quality of paper to be
used. You have to take into consideration also the
type of line work required.

13. Types of Pencil
Hard pencils – are used
where extreme accuracy
is required especially
working on graphs,
diagrams and charts.
Medium pencils – are
used for general purpose
work in drawing.
Soft pencils – are too
soft to be used in
mechanical drafting.
They are very useful for

14. DRAFTING TECHNOLOGY
LEARNING OUTCOMES: At the end of this Lesson, you are expected to
do the following:
 Define Drafting
 Identify drafting materials and tools/drawing instruments
 Identify differenttypes of lines
 Showcase alphabet of line through drawing

15. Orthographic Drawing
The term orthographic is derived
from two Greek words: orthos,
which means ‘‘straight’’ and
graphos which means ‘to draw’’. In
other words, it describes a type of
drawing represented only by lines
without shading or rendering.
Alphabet of lines
The basis of all drawings is line. Many
different lines are used even in simple
drawings. All lines should be made so
clearly that there will be no doubt of
TYPES of LINES
 BORDER LINE
 VISIBLE LINE
 HIDDEN Or INVISIBLE LINE
 CENTER LINE
 PROJECTION or EXTENSION LINE
 DIMENSION LINE
 REFERENCE LINE
 LEADER LINE
 LIMITING LINE

16. BORDER LINE - Is the heaviest and darkest line in a drawing. It surrounds a drawing
and is usually rectangular in shape.
VISIBLE LINES – are sometimes called object line. These represent the visible
outline or parts of an object.
HIDDEN or INVISIBLE LINES – these lines consist of small or short dashes with
gaps in between that are about 1-2 millimeters wide.
CENTER LINE – it is the lightest or finest line in a drawing. It consists of one long
dash and
PROJECTION LINES – also called as extensionlines. Continuous lines extending
from a view to show clearly the dimension limits.

17. DIMENSION LINE – it consists of three parts: arrowheads, fine line and number of measurements. It is used to
indicate the measurements of an object.
REFERENCE LINES – it is an irregular, fine, curved line with an arrowhead at one end, It is used to label the parts
of an object.
LEADER LINE – is a broken line with an arrowhead at one end. It is used for indicating the measurement and
name of a part.
LIMITING LINE – is used for limiting the length of an elongated object, so that it can be shown without changing
the size of its view.

18. Angle - geometrical figure composed of two
straight lines intersecting at one of their
extremities
Calculation - act or process of or result of
calculating
Circle - closed curve where all points are equally
distant from the center
Concentric circles - consist of two or more
circles with a common center.
Decimal - number expressed in a counting
system that uses units of 10, especially a

19. Dimension - measurable extent of length, thickness
and width Eccentric circles - circles having no
common center.
English system – scaled in inches where one foot
equals 12 inches.
Formula - special kind of equation. It is a
mathematical rule expressing the relationship of
two or more quantities by means of numerals,
variables and operating symbols
Geometric shapes - characterized by straight lines,
regular curves, and angles

20. Mensuration – act of art of measuring
Metric system – system of measurement
based on the meter Perpendicular lines –
lines which make a 900 angle with each
other
Radius - length of a straight line
connecting the center of a circle with a
point on the circumference of a circle.
Standard - measure of reference

21. D I M E N S I O N R A A G
O M D E C I M A L D N E R
H E E K U U E E I R G R A
K N E T Y P E W Y E L F D
A S E M R A D I U S E D U
A U S H T I F E O U R S A
G R W H I O C I R C L E T
F A G G T K U S U U E E I
Y T H D E I U Q Y O W S O
U I O E Q I K A K S E W N
F O R M U L A E E P T U U
N N C A K C U M A D S E I
E N G L I S H S Y S T E M
ACTIVITY 1: Word Hunt
Direction: Find 10 words that are related to the lesson.
Write your answer in ¼ sheet of paper.

22. ACTIVITY 2: LANDSCAPE
DRAWING
DIRECTIONS:
In one piece oslo paper or bond
paper, make a landscape drawing
showcasing the ALPHABET OF
LINE.

27. Orthographic Drawing is the method
of representing the exact shape and
size of a given object in one or several
views.
Others call it “multi-view drawing”
because it represents not only one but
several views which are projections of
an object as observed in one surface.

28. The Three Regular Views
The Top, Front and Right side views are arranged closer
together, are shown on the picture. These are called
Three regular views.

29. Activity 2
Direction: Draw the three Views of this figure.
(5 points each view)

33. meet our team
TAKUMA HAYASHI MIRJAM NILSSON​ FLORA BERGGREN​ RAJESH SANTOSHI
president chief executive officer chief operations
officer
vp marketing
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34. meet our extended team
TAKUMA HAYASHI MIRJAM NILSSON​ FLORA BERGGREN​ RAJESH SANTOSHI
president chief executive officer chief operations officer vp marketing
GRAHAM BARNES ROWAN MURPHY ELIZABETH MOORE ROBINE KLINE
vp product SEO strategist product designer content developer

35. plan for product launch
PLANNING synergize scalable e-commerce
MARKETING disseminate standardized metrics
DESIGN coordinate e-business applications
STRATEGY foster holistically superior methodologies
LAUNCH deploy strategic networks with compelling e-business needs
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36. timeline
SEP 20XX
synergize scalable e-commerce
NOV 20XX
disseminate standardized
metrics
JAN 20XX
coordinate e-business
applications
MAR 20XX
foster holistically superior
methodologies
MAY 20XX
deploy strategic networks with
compelling e-business needs

37. areas of focus
B2B MARKET SCENARIOS
o Develop winning strategies to keep ahead of the
competition
o Capitalize on low-hanging fruit to identify a ballpark value
o Visualize customer directed convergence​
CLOUD-BASED OPPORTUNITIES
o Iterative approaches to corporate strategy
o Establish a management framework from the inside
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38. how we get there
ROI
o Envision multimedia-
based expertise and
cross-media growth
strategies
o Visualize quality
intellectual capital
o Engage worldwide
methodologies with
web-enabled
technologies
NICHE MARKETS
o Pursue scalable
customer service
through sustainable
strategies
o Engage top-line web
services with cutting-
edge deliverables
SUPPLY CHAINS
o Cultivate one-to-one
customer service with
robust ideas
o Maximize timely
deliverables for real-
time schemas
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39. summary
At Contoso, we believe in giving 110%. By
using our next-generation data
architecture, we help organizations virtually
manage agile workflows. We thrive
because of our market knowledge and
great team behind our product. As our
CEO says, "Efficiencies will come from
proactively transforming how we do
business."​
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