Translations:Drawing Template HowTo/72/en

Page Size
In order to allow a final drawing to be printed in the right scale, the template must contain it's dimensions in real world units. Otherwise the whole drawing page would be printed scaled down by a factor of 3.54 (90(px/in)/25.4(in/mm)). Inside the the  -Tag the unit "mm" is added to the width and height fields. And a viewBox Attribute has to be added. The viewBox ranges from 0 0 to the width and height of the template. This way the SVG user unit (px) is redefined to be 1mm long. In consequence programs like Inkscape will be able to print a resulting drawing up to scale. Current versions of Inkscape handle this information very badly. Inkscape effectively rescales the whole document to 90dpi. This is not much of a problem for a final drawing, but imposes difficulties for editing drawing templates. After editing a template in Inkscape, it would have the same real word size on its own but elements of the drawing would be scaled down by a factor of 3.54. (Because the template would be in 90dpi but FreeCAD assumes 1px/mm.) Therefore it's recommended to remove the "mm" from the width and height attributes before opening an existing template in inkscape and recreate the units and viewBox attribute afterwards.