Quick Answer: What Is A Dimension Line?

What is another name for an object line?

A visible line, or object line is a thick continuous line, used to outline the visible edges or contours of an object.

A hidden line, also known as a hidden object line is a medium weight line, made of short dashes about 1/8” long with 1/16”gaps, to show edges, surfaces and corners which cannot be seen..

What are dimension and extension lines?

Extension lines indicate the points between which the dimension figures apply. They are drawn perpendicular to the dimension lines, start with a visible gap (~1/32″) between them and the object, and terminate 1/8″ (3.2 mm) beyond the last arrowhead.

What are the dimensioning rules?

Overall dimensions should be placed the greatest distance away from the object so that intermediate dimensions can nest closer to the object to avoid crossing extension lines. 9. A dimension should be attached to only one view (i.e., extension lines should not connect two views).

What are alphabet lines?

The Alphabet of Lines is a list of line symbols that engineers use in technical drawings to communicate specific shapes, sizes or surfaces. In the Alphabet of Lines, thick, dark lines represent the outline of an object, showing its visible surfaces and edges.

What are typical dimension line terminators called?

ArrowheadsArrowheads are typical dimension line terminators. There are other acceptable dimension line terminators. Arrowheads point directly to the object that is being dimensioned or the extension lines at the end of the dimension. Arrowheads are made three times as long as they are wide.

What does it mean when a dimension is called out on a drawing?

Directly toleranced dimensions, use the tolerances called out in the drawing format, or have the tolerance included in the dimension. … They are “exact” dimensions. They are signified by placing a box around them.

Which best describes the dimensions of a line?

It extends infinitely in both directions. It has only length therefore, it is one dimensional. Hence, the best describes the dimensions of a line is “A line has one dimension because it is made up of all points that extend infinitely in either direction. ‘

What are the 7 types of lines?

There are many types of lines: thick, thin, horizontal, vertical, zigzag, diagonal, curly, curved, spiral, etc. and are often very expressive.

What is line and types of line?

There are four types of lines: horizontal line, vertical line, perpendicular, and parallel lines. They are defined based on their orientation, and the angles if any, formed between them.

What are leader lines?

A leader line is a line that establishes a connection between a graphical representation of an item and some text. A leader points to a bit of our drawing and says: ‘Oi – Look Here’ and ‘Read This! ‘.

What do Dimension lines show?

You can draw dimension lines to indicate the measurements of objects in a drawing, such as length, width, height, depth, and distance. Dimension lines indicate the measurements of objects in a drawing.

Can you cross dimension lines?

Dimension lines should not cross, if avoidable. Dimension lines and extension lines should not cross, if avoidable. Extension lines may cross each other. When extension lines cross extension lines or visible lines, no break in either should be made.

What are the 8 rules of dimensioning?

Terms in this set (8)Rule 1: Dimensions should not be duplicated, nor should the same info be given in two different ways.Rule 2: Dimensions should be attached to the view that best shows the contour of the feature being dimensioned.Rule 3: … Rule 4: … Rule 5: … Rule 6: … Rule 7: … Rule 8:

What four lines are used to aid in dimensioning?

There are four methods: parallel, running, chain, and combined dimensioning. Some methods of dimensioning a drawing can create an accumulating error.

What is the difference between dimension lines and extension lines?

Dimension & Extension Lines. Dimension Lines – show the direction and extent of the numerical size. They are thin lines and terminate with an arrowhead at each end. … Extension Lines – are used to extend a surface or a point beyond the outline of the object so that a numerical size can be related to that surface.

What are two types of lines?

How many types of lines are there? There are two basic lines in Geometry: straight and curved. Straight lines are further classifies into horizontal and vertical. Other types of lines are parallel lines, intersecting lines and perpendicular lines.

What is double dimensioning?

4.5/5 (85 Views . 14 Votes) Dual dimensioning is the drafting practice of using multiple units of measure in a dimension in the same direction of a feature. SolidWorks and many other CAD programs support dual dimensioning.

What is ISO dimension standard?

some basic, visual differences between the two standards in terms of drafting: ANSI dimensions are read horizontally. ISO dimensions are parallel to the dimension line. ANSI dimensions are centered on the dimension line. ISO dimension are placed above the dimension line.

Which line is called a dimension line?

Dimension lines are drawn using continuous thin (narrow) lines (straight or curved). The given type of line in question is used to represent cutting planes. Explanation: The other lines are continuous thin (narrow) (straight or curved) which areused for grid, dimension. Dashed thin (narrow) is used for hidden outlines.

What are the 3 types of drawing dimensions?

The basic types of dimensioning are linear, radial, angular, ordinate, and arc length.

What are dimensioning tools?

The Dimension tool allows you to measure and show the distance between two points in your layout. It also allows you to set a certain distance between objects, or to change an object’s size. The tool is available in the 2D Plan and 2D Elevation views.