Transcript Terms & Definitions

Basic Drafting Tools
Drafting & Design Technology
Unit 2
Compass
• Used to draw circles
and arcs
Divider
• Used to transfer
dimensions
Drafting Tape
• A specially-prepared
tape used to adhere
drawing media to
the working surface
Dusting Brush
• Used to brush loose
graphite and eraser
dust from a drawing
Eraser
• Used to remove
pencil lines and
graphite smudges
from a drawing
Erasing Shield
• A metal plate with
various slots and
openings used to
protect line work
when a portion of
the drawing is to be
erased
Irregular Curve
• Used to lay out any
noncircular curve
Lead Pointer
• Used for sharpening
mechanical pencil
leads
Lettering Guide
• Used to lay out
guidelines for
lettering
Mechanical Pencil
(Lead Holder)
• Used to hold leads
of various hardness's
Protractor
• Used to measure
angles
Scale
• Used to measure
the length of a line
Template
• A thin, flat, plastic
tool with various
size openings of
different shapes
used to expedite
the drawing of
standard features
Triangle
• A thin, flat, rightangled piece of
plastic or metal
with acute angles of
45, or 30 and 60
used for drawing
vertical or inclined
lines that are
multiples of 15
Rules for Maintenance and
Care of Drafting Tools &
Equipment
• Keep hands and
equipment clean
• Keep all instruments
clean and dry
• Do no bend templates
sharply
• Do not use templates or
scales as straight edges
for cutting tools
• Do not use templates as
eraser shields
• Do not hit scales and
triangles on edges
• Do not overextend
compasses and dividers
• Clean plastic tools with
soap and water only
• Do not stick compasses
and divider points into
scales and triangles
• Never sharpen leads
over drawing or table
surface