Can Centre lines end at visible lines?
Can Centre lines end at visible lines?
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.
What is the difference between a hidden line and a visible 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.
When hidden lines meet their dashes should?
Creating Hidden Lines Rule 2: Hidden lines should always begin and end with a dash. An exception is when the hidden line begins or ends at a parallel visible or hidden line.
What is the basic difference between Centre line and hidden line?
In a scaled drawing, the hidden line can be measured from the start of the first dash, to the end of the last dash. Centre lines are drawn to indicate the exact centre of a component being drawn. They are made from a series of lighter long and short dashes.
Are centerlines only for holes?
So the rule of thumb would be, yes, you need them for dimension purposes but you also need them for dimensioning purposes if there is more than one feature all along that centerline. The other thing to remember is when you are dimensioning to a centerline. (Let’s say we had 10±. 025 from hole to hole.)
What line refers to as visible lines?
Visible lines are the edges or “outlines” of an object. They are drawn as solid lines with a thick/heavy weight.
What is the sketch line of center line?
Centre line Centre lines are drawn to indicate the exact centre of a component being drawn. They are made from a series of lighter long and short dashes.
Which type of line has precedence over all other types of lines?
Precedence of Lines A solid line (object or continuous) takes precedence over a hidden line, and a hidden line takes precedence over a centerline.
What is the order of precedence of lines in a drawing?
Precedence of Lines Lines are shown on the views in a prescribed order of precedence. A solid line (object or continuous) takes precedence over a hidden line, and a hidden line takes precedence over a centerline.
What is the purpose of center lines?
Centerlines are one of the most frequently used tools in engineering drawing. Their basic purpose is to show circular/cylindrical features in a drawing, which are found in abundance in mechanical parts. Common examples of such features include bolt holes, pins, discs, etc.
What is the precedence of line?
