Chapter 2 Drawings and Templates
71
Figure 2-19.
Linear unit formats available in the
Drawing Units
dialog box. Select the appropriate type and
precision for the specific drawing application.
Type Typical Applications Characteristics Example
Decimal Mechanical,
architectural, structural,
civil (inch or metric)
• Decimal inches or millimeters.
• Conforms to the ASME Y14.5
dimensioning and tolerancing standard.
• F Fo ur d d eci im l al pl la ce d d fault ef lt pre i ci ion. si
14.1655
Engineering Civil—feet and inch • Feet and decimal inches.
• Four decimal place default precision.
1’-2.1655”
Architectural Ar ch it ec tu ra Architectural, l A rc hi te ct ur al
structural—feet and inch
• • Feet, Fe et inches, in ch es and an d fractional fr ac ti on al i i nches nc he s.
• 1/16” default precision.
1’ 1 2 -2 3 3 /16” /1 6
Fractional Mechanical—fractional • Fractional parts of any common
unit of measure.
• 1/16” default precision.
14 3/16
Scientific Sc Sc ie ie nt nt if if ic ic Chemical Ch Ch em em ic ic al al engineering, e e ng ng in in ee ee ri ri ng ng ,
astronomy
• • E+01 E+ E+ 01 01 means m m ea ea ns ns the t t he he base b b as as e e number nu nu mb mb er er is i i s s
multiplied by 10 to the first power.
• Used when very large or small
values are required.
• Four decimal place default precision.
14166E+01 1. 1. 41 41 66 66 E+ E+ 01 01
Figure 2-18.
Use the
Drawing
Units
dialog box
to set linear and
angular unit values.
Select
linear units
Specifies the
units used to
insert objects,
but does not
preset the
drawing to
use a specific
unit of
measurement
Select
angular units
Pick to change
direction of
angular
measurement
Select angular
precision
Access the
Direction
Control
dialog box
Select linear
precision
Pick the
Direction…
button to access the
Direction Control
dialog box. See
Figure 2-20. Pick the East, North, West, or
South
radio button to set the compass
orientation. The
Other
radio button activates the
Angle:
text box and the
Pick an angle
button. Enter an angle for zero direction in the
Angle:
text box. The
Pick an angle
button allows you to pick two points on-screen to establish the angle zero direction.
CAUTION A O CA U A U T U T TI O N
Use the default direction of
0° East
at all times, unless you have a
specific need to change the compass direction angle, such as when fi
measuring direction using azimuths (0° North). This textbook uses
the
0° East
direction, and this default should be used in order to
complete most exercises and problems correctly.
radio button:
A selection that
activates a single
item in a group of
options.