Line width and line width

To the various elements such as correspondence, Bemaßungslinien, body edges, etc. in technical drawing better distinguish between being able to draw them in different widths. This one uses when dealing with ink is different ink pens, which it specially in the corresponding line widths to buy there.

The base width of lines in technical drawings can in principle be chosen freely, but they should always be in a format suitable to the drawing its strength. The following are recommendations for the line-width and line thickness depending on the subscription format.

Line width for drawing formats A4 to A2

When the formats A4 to A2 can be found in technical drawings between foremost group of 0.7 and 0.5 are free to choose. However, it is advisable to line group DIN 15 - 0.5 to use. The base line has the line width and 0.5 mm is regarded as the "broad" line. The other line widths are geared to: Average lines with a line width 0.35 mm, narrow lines with 0.25 mm.
For what elements which line width and line width to use, you can use the table below.

Kind of Line	Line width	Use
wide	0,5 mm	Visible edges and contours
middle	0,35 mm	Covert edges and contours covert Scripture (for dimensions and other labels)
narrow	0,25 mm	Dimension line & Maßhilfslinien Reference lines Hatchings Signs for surface data Center lines, circles and partial circles hole Freehand lines

Line width for drawing formats A1 and A0

Drawing formats for DIN A1 and A0 is the use of the line group 0.7 in technical drawings according to DIN 15 required.
For what elements which line width and line width is applied, can be found in the table below.

Kind of Line	Line width	Use
wide	0,7 mm	Visible edges and contours
middle	0,5 mm	Covert edges and contours covert Scripture (for dimensions and other labels)
narrow	0,35 mm	Dimension line & Maßhilfslinien Reference lines Hatchings Signs for surface data Center lines, circles and partial circles hole Freehand lines