Quick Answer: Can You Dimension Hidden Lines?

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..

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! ‘.

Where should dimension lines be placed?

Radial dimension lines should always be placed in the circular view of the arc, and should be drawn at an angle, never horizontal or vertical.

Can dimension lines cross?

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 is the necessity of dimension a drawing?

The purpose of dimensioning is to provide a clear and complete description of an object. A complete set of dimensions will permit only one interpretation needed to construct the part. Dimensioning should follow these guidelines. Accuracy: correct values must be given.

What is the difference between a size dimension and a location dimension?

Size dimensions describe the size of each geometric feature. … Location dimensions show the location of each geometric feature within an object or view. Location dimensions tell the viewer where edges occur inside an object view.

What are dimension lines?

The dimension line is a fine, dark, solid line with arrowheads on each end. It indicates direction and extent of a dimension. In machine sketches and drawings, in which fractions and decimals are used for dimensions, the dimension line is usually broken near the middle to provide open space for the dimension numerals.

What are different types of dimensions?

Types of DimensionsSlowly Changing Dimensions.Rapidly Changing Dimensions.Junk Dimensions.Stacked dimensions.Inferred Dimensions.Conformed Dimensions.Degenerate Dimensions.Role-Playing Dimensions.More items…

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.

How do you use hidden lines?

Hidden lines are dashed lines used to represent internal features that are obscured by the object. These hidden lines represent the obscured corner of the notch. potential hidden lines in this sketch fall directly behind visible lines in the right side view.

Can Leader lines cross extension lines?

However, extension lines may cross each other. … Center lines should generally not extend from view to view. 26. Leaders for notes should be straight lines (not curved), drawn at an angle, and aimed towards the center (but stopping at the edge of the circle) in the circular views of holes whenever possible.

How are dimension lines drawn?

To draw a vertical or horizontal dimension line, click the Horizontal or vertical dimension tool . Click to place the starting point, and drag to where you want to place the endpoint of the dimension line. Move the pointer to position the dimension line, and click to place the dimension text.

How do you dimension?

Measure any two sides (length, width or height) of an object or surface in order to get a two-dimensional measurement. For example, a rectangle that has a width of 3 feet and height of 4 feet is a two-dimensional measurement. The dimensions of the rectangle would then be stated as 3 ft. (width) x 4 ft.

What are the two basic types of dimensions?

There are two classifications of dimensions: size and location.Size dimensions are placed in direct relationship to a feature to identify the specific size.Location dimensions are used to identify the relationship of a feature to another feature within an object.

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 is the hidden line?

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. Sometimes they are used to make a drawing easier to understand. Often they are omitted in an isometric view.

What are the 3 types of drawing dimensions?

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

What line weight should dimension lines be?

0.25mmThe default line weight in both Autocad and Inventor is 0.25mm. The recommended Line weight for the ‘Drawing frame’ (Border) for engineering drawings is 0.7mm.

Where do you put hidden lines?

Hidden lines are used to show surfaces that are not directly visible. All surfaces must be shown in all views. If an edge or surface is blocked from view by another feature, it is drawn using a hidden line. Figures 4-11 and 4-12 show objects that require hidden lines in their orthographic views.

What type of lines are used for hidden details?

Hidden line Hidden details are shown by a series of dashes making up a broken line. It is normal practice that you place a dash at the beginning of the hidden line and another at the end where it meets an intersecting line.

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.