Which Type Of Line Is A Part Of Dimension?

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 are the three types of centerlines?

Line ConventionsCenter lines. Center lines are used to indicate the center of a circle, arc, or any symmetrical object. … Visible Lines. The visible edge lines of the view are drawn as solid, thick lines. … Hidden Lines. … Extension Lines. … Dimension Lines. … Leaders. … Break Lines. … Phantom Lines.More items…•

Which line is used for visible outlines?

Continuous thick Used for visible outlines and edges. Dashed thin line. Used for hidden outlines and edges. Chain thin.

What are the two methods of dimensioning in common use?

Two methods of placing dimensions are currently used: the aligned system and the unidirectional system. In the aligned system of dimensioning, the dimensions are placed in line with the dimension lines. Horizontal dimensions always read from the bottom of the sheet. Vertical dimensions read from the right.

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 does a hidden line look like?

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 5 types of lines?

There are 5 main types of lines in art: vertical lines, horizontal lines, diagonal lines, zigzag lines, and curved lines. Other types of lines are simply variations of the five main ones.

What is short break line?

Short break lines are thick, wavy solid lines that are drawn freehand. When either of these break lines is used to shorten an object, you can assume that the section removed from the part is identical to the portions shown on either side of the break.

What are the lines on a blueprint called?

Phantom lines (see Figure 1-6) are thin lines used to indicate alternate positions of the parts of an object, repeated detail or the locations of absent parts. They are made by alternating one long and two evenly- spaced, short dashes, with a long dash at each end.

How many types of dimensioning are there?

Dimensioning a drawing is about adding dimensions, notes and lines to a drawing. There are four methods: parallel, running, chain, and combined dimensioning. Some methods of dimensioning a drawing can create an accumulating error. This is when several tolerance errors are added together.

What are the principles of dimensioning?

Three principles of dimensioning must be followed:Do not leave any size, shape, or material in doubt.To avoid confusion and the possibility of error, no dimension should be repeated twice on any sketch or drawing.Dimensions and notations must be placed on the sketch where they can be clearly and easily read.

What is the solid black line called?

1 Object Lines and Hidden Lines. The outline of the object is a solid black line called an object lineA solid black line that defines the outline of an object..

How do you use 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.

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:

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 does a black line mean on maps?

According to the Google Maps site, the colored lines representing traffic conditions on major highways refer to the speed at which one can travel on that road. … If you see gray lines, that means there’s no traffic information available at the time and a red-black line refers to extremely slow or stopped traffic.

Which type of line is not a part of Dimension?

Explanation: An outline or a centre line should never be used as a dimension line.

What is a Dimension line?

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 is projection of a line?

Projection lines. Projection lines are extensions of lines that assist in 2D drawing. You can use projection lines to help you create new geometry, and any constraints you create with them remain active even after you turn projection lines off.

What is dimensioning and its types?

The basic types of dimensioning are linear, radial, angular, ordinate, and arc length. Use the DIM command to create dimensions automatically according to the object type that you want to dimension.