Features
of
the
textbook
5
Copyright Goodheart-Willcox Co., Inc.
160
AutoCAD
andIts
Applications—Basics
CopyrightGoGoodheart-Willcox Co., Inc.
Exercise
5-3rcise
Complete
the
exe
on
thecompanion
website.
www.g-wlearning.com/CAD
SettingLayeignolorcolorcotorplotleachrsawingryrimporr,s
r C
Youcan
ass
a
unique
lo
You
can
also
use
layer
s
is
uncommon.zation,
Assigning
colors
clarity,
organisymbolsandnfottceausengeopertiesrnsing
workability,
features
and
Use t
h e
Color
column
o
h
Layer
Pick t
h
e
existingSelect
color
swatch
to
ch
h
h
Figure
5-10.The
Color
dialog
Color Books
tab.
Each
tab
providesprovides
Thedefault
Index Color
tab
The
Index Color
tab
includes
255
the
AutoCAD
ColorIndexllow,).3Thgsrwrn,tteseveyan,detfaulte,ao=-gr.
( A
CI
h
and a
name:1
=
red, 2 = ye
ThecolorItwahite ( n
umber7)
appear
h
ground.
ppears
black
on
thedefaulaywtheteodeinutheeckgrGreen,Blue:olorenofckeoprevri-IoClAocraeefomixthmtPia.ndldaefimplldcesaefitaendpadecifiepsindayeplsedihteratortsolc.oxcobjeboelltaoglcolor:tyanundnrkaydaba-ckecpslndwte.hi=amrbenu7ordintogcchaaeDawgs.indr2botdoeta,dnmost.oavecnmhageoiryItollCmcfaeAlsxrogoidii6senricet,eceraColorndaatab,lxSee.boeal.rayechogatordiolocTrueaColorngitab,ughimpnttaronawgindrtininrolocgocr.nee-sneetsgccrotthli-splobjenohhihgrsuldoofotduirixeasshoassltgtotIndetSelectlnhlplubosRed,sefatoeooinbtoinbatoColocnumtrtasxsttr=rrrrooleooteolcho5dillflinoocrnoottooceaedcrolpccIndexayoeocehtlounlttManagerhhgcoinaes,cColor:hetncfuoogtoayeo=locheeesmhiri.veLon4t-rttreBloehtceinnewssiat.ehititaeswatinayercludrltefieeplrevowereateinsoldrrmeProloxlcrpreofdiffodipickaeyest=ctayeboctoaaerndhinotoatto
Hover
over
a
colorswatsedto
ch
h
red,
green,
and
blue ( R
GB)u
h
swatchto
select
and
display
h
h
numberin
t h
e
Color:
text
box.A
h
h
ously
assignedcoloectppeaolch,indicatesOKcbuor.nydefault,
r
a
r
h
h
After
you
sel
a c
h
h
layer.Theldlayercolor,
ayercolor
swat
the
selecte
orByLayer.
NOTE NOTE
Your
graphics
card
and
monitor
affect
color
display
characteristics
and
sometimes
thenumber
of
availablecolors.
PROF
ESSIONAL TIP
P R
O
F
ESSIONAL TIP
Use
the
color
swatchinthe
LayerdrgphdownlisttochangeManager.
o
-
the
color
assigned
to a
layer
without
accessin
t
e
Layer Prop
erties
CAUTION CAUTION
TheCOLORcan
commandprovanample,
idesaccesseto
the
Select Color
dialog
box,
which
you
u
se to set
absolut
value
for
color.
If
absolute
color
to
red,
for
ex
the
red
color
overrides
assigned
to
layers,
and
all
objects
appear
red.
For
most
applications,rayeLehttosrolceusetehthyoand
set
thecolorManager
to
thedefaulontrol t
ByLayer
settinganduselayers
Properties to
c
objectcolor.
COLOR
Type
COLOR
ab
solute
value:In
propertysetdirectly
ttings,
a value sereferenced
instead
of
by
layer or by
block.
An
absolute
value
overrides the
corresponding
layer
settings.
F
e
a
t
u
r
e
s
o f
t
h
e
t
e
x
t
b
o
o
k
Co py
righ t
anage
Chapter 17
Linear and Angular Dimensioning
519
Copyright Goodheart-Willcox Co., Inc.
Drafting Symbols
For more information about common drafting symbols and the
gdt.shx
font, go to the companion website, select the
Resources
tab, and select
Drafting Symbols. www.g-wlearning.com/CAD
Exercise 17-2
Complete the exercise on the companion website.
www.g-wlearning.com/CAD
Controlling the Dimension Line Angle
The
Horizontal
and
Vertical
options, available after you establish the extension
line origins, are helpful when it is diffi
cult to produce the appropriate horizontal or
vertical dimension line, such as when you are dimensioning the horizontal or vertical
distance of a slanted surface. The
Horizontal
option restricts the
DIMLINEAR
command
to dimension only a horizontal distance. The
Vertical
option restricts the
DIMLINEAR
command to dimension only a vertical distance. The
Mtext,
Text,
and
Angle
options are
available to change the dimension text value if necessary.
The
Rotated
option, also available after you establish the extension line origins,
allows you to specify a dimension line angle. Practical applications include dimen-
sioning angled surfaces and auxiliary views. This technique is different from other
dimensioning options because you provide a dimension line angle. See
F
igure 17-5.
At the
Specify angle of dimension line 0:
prompt, enter a value or specify two points
on the line.
PROFESSIONAL
TIP
PROFESSIONAL TIP
AutoCAD dimensioning should be accurate and neat. You can achieve
consistent, professional results by using the following guidelines.
•
Never round off decimal values when entering locations, distances,
or angles. For example, enter
.4375
for 7/16, rather than
.44.
•
Set the precision to the most common precision level in the drawing
before adding dimensions. Adjust the precision as needed for each
dimension.
•
Always use drawing aids, such as object snaps, to ensure the accu-
racy of dimensions.
•
Never type a different dimension value from what appears high-
lighted or in
brackets. To change a dimension, revise the drawing or dimension settings. Only adjust dimension text when it is neces-
sary to add prefi
xes and suffi
xes or to use a different text format.
Exercise 17-3
Complete the exercise on the companion website.
www.g-wlearning.com/CAD
Reference
Material
Running Glossary
Entries defi ne key terms.
Reference Material
References direct you to
charts, tables, and other
useful references available
on the companion website.
Professional Tips increase
your productivity in using
AutoCAD commands and
techniques.
Notes explain important
aspects of a topic.
Cautions alert you to
potential problems.