Autocad learning in telugu
When you start the Units command, the first thing you see is the Drawing Units dialogue box, shown on the right. The dialogue box is divided into four main sections. The upper two are “Length”, which refers to linear units and “Angles”, referring to angular units. Settings for linear units and angular units can be made independently and in each case, you can control both the type and precision. In addition, the Angles section also allows you to specify the direction in which angles are measured. See below for more details.
A third section, entitled Drawing units for Design Center blocks allows you to assign a specific unit to the drawing so that when blocks are inserted via the AutoCAD Design Centre, they will automatically be scaled. The final section, Sample Output, gives you a preview of the drawing units as they will be displayed using the current settings.
Specifying Units of Measurement in AutoCAD has three stages which include
- Linear Units ( Length )
- Angular Units ( Angle )
- Precision in Units
Linear Unit Conversion: This helps a user to select from the available Length which include
- Architectural – Feet and Fractional Inches
- Engineering – Feet and Decimal Inches
- Decimal – Metric or SI
- Fractional – Whole Numbers and Fractions
- Scientific – Decimal value raised to power
Architecture and Engineering mainly exists for users in United States as they still practice these units.
Let’s assume we have 1.5 Drawing Units, the representation in different unit type is listed below.
Decimal – 1.5000
Scientific – 1.5000E+00
Engineering – 0′-1.5000″
Architecture – 0′-1 1/2″
Fractional 1 1/2
Angular Units of Measurement : This helps a user to select from the available Angle which includes
- Decimal Degrees – Metric
- Deg/Min/Sec – Degree, Minutes, Seconds
- Grads – 400 grads – 360 degrees
- Radians – 2 Pi radians – 360 degrees
- Surveyor – This is based on Compass
To better understand Angular values let’s assume we have 180 Angular Units, the representation in different unit type is listed below.
Decimal Degree – 180.00
Deg/Min/Sec – 180d0’0″
Grads – 200g
Radians – 3.142r
Surveyor – W ( West )
Precision Value : This helps a user to specify the precision value needed for the unit he specifies. Ideally precision value varies in terms of number of zeros after the decimal value. More the zeros, mean the precision is more. Zeros ranging from 1 to 8 exists here.