Linear, Aligned, diameter, radius, Angular and University of Technology Computer engineering and information technology Department AutoCAD Lecture (15) Dimensions Linear, Aligned, diameter, radius, Angular and Style Manager Issued by: Ms.c. Ameer Mosa Thoeny

Working with Dimensions: University of Technology Computer engineering and information technology Department Working with Dimensions: Dimensioning is usually done after you complete all or most of a drawing. The elements of a dimension:

University of Technology Computer engineering and information technology Department Linear Dimensions: Use linear dimensions for lines, a straight segment of a polyline, or a straight segment in a block. You can also use a linear dimension for arcs and circles Specifying the linear dimensioned object To dimension a line, choose Linear Dimension from the Dimension toolbar or from standard bar- dimensions – linear. The command syntax for copy is as follows: Command: dimlinear Specify first extension line origin or <select object>: pick Specify second extension line origin: pick Specify dimension line location or [Mtext/Text/Angle/Horizontal/Vertical/Rotated]: pick Dimension text = 24.7411

University of Technology Computer engineering and information technology Department Aligned Dimensions: When you want to dimension a linear object that is not orthogonal Specifying the Aligned dimensioned object To dimension a non orthogonal line, choose Aligned Dimension from the Dimension toolbar or from standard bar- dimensions – Aligned. The command syntax for copy is as follows: Command: dimaligned Specify first extension line origin or <select object>: pick Specify second extension line origin: pick Specify dimension line location or[Mtext/Text/Angle]: pick Dimension text = 21

Dimensioning Arcs and Circles University of Technology Computer engineering and information technology Department Dimensioning Arcs and Circles diameter dimensions. Radius dimensions. Marking arc and circle centers. Angular dimensions

University of Technology Computer engineering and information technology Department diameter dimensions When you want to dimension of an arc or circle objects, use an diameter dimension. Specifying the circle diameter dimension To dimension a circle diameter, choose diameter Dimension from the Dimension toolbar or from standard bar- dimensions – diameter. The command syntax for copy is as follows: Command: dimdiameter Select arc or circle: pick Dimension text = 8

University of Technology Computer engineering and information technology Department Radius dimensions When you want to dimension of an arc or circle objects, use a radius dimension. . Specifying the circle radius dimension To dimension a circle radius, choose radius Dimension from the Dimension toolbar or from standard bar- dimensions – radius. The command syntax for copy is as follows: Command: dimradius Select arc or circle: pick Dimension text = 4

Marking arc and circle centers University of Technology Computer engineering and information technology Department Marking arc and circle centers Circle and arc centers are often marked in mechanical drawings because the center is an important aspect. Specifying the Center Mark dimensioned object To dimension a center mark, choose center Mark Dimension from the Dimension toolbar or from standard bar- dimensions – center Mark. The command syntax for copy is as follows: Command: dimcenter Select arc or circle: pick

University of Technology Computer engineering and information technology Department Angular dimensions When you want to dimension of an arc or angle objects, use an angular dimension. Specifying the Angular dimension To dimension a angel or arc, choose angular Dimension from the Dimension toolbar or from standard bar- dimensions – angular. The command syntax for copy is as follows: Command: dimangular Select arc, circle, line, or <specify vertex>: pick Specify dimension arc line location or [Mtext/Text/Angle]: pick Dimension text = 136 9

Understanding Dimension Styles University of Technology Computer engineering and information technology Department Understanding Dimension Styles You should create your dimension styles before dimensioning. To create a dimension style, choose Dimension Style from the Dimension toolbar to open the Dimension Style Manager, or from standard bar- dimensions – style.

University of Technology Computer engineering and information technology Department To create a new style, click New to open the Create New Dimension Style dialog box.

Then specify the wanted parameters as below: University of Technology Computer engineering and information technology Department Then specify the wanted parameters as below:

Changing line type done from properties bar. University of Technology Computer engineering and information technology Department NOTE: Changing line type done from properties bar.   hange precision then, right click on dimension –precision -0 As shown below: