Under Base Angle, enter a value for the default 0 angle direction.If you want to measure angles clockwise instead of counterclockwise, select Clockwise. Under Angle, select an angle type and desired precision.Under Length, select a unit type and desired precision.With this setting disabled, it would remain one unit long (which would now be only one millimeter rather than one inch). For example, if an item that is one inch long were inserted into a drawing set to millimeters, this setting would scale the item to 25.4 mm in length when enabled. To scale objects that you insert into the current drawing from drawings with different drawing units, select Scale Objects Inserted from Other Drawings.Ĭlear this option to insert objects at their original size without scaling.For example, if you select Inches, each drawing unit equals one inch. The units that you select determine the unit of measurement that each unit in your drawing represents.

Various imperial and metric units are available. Under Drawing Units, select the desired units.20 x 12 = Scale Factor 240īe sure to check out our article, Converting Between Drawing Scales, if you need to manually change the scale of a drawing or object.Specifying default units options for the current drawing To convert an engineering drawing scale to a scale factor: Invert the fraction and multiply by 12.To convert an architectural drawing scale to a scale factor: Said a different way by Autodesk, 'You can change the view scale of the viewport by using the XP option of the ZOOM command when model space is accessed from within a layout viewport.' Calculating Scale Factor For instance, you would be in paper space on a sheet, then you would enter model space within the viewport, then you would type Z or Zoom and enter 96xp to scale the drawing to 1/8' = 1'-0' in paper space. The suffix is AutoCAD nomenclature for changing the scale within a viewport. You will notice that the Viewport Scale in the charts below indicate a scale with the suffix XP. However, since these drawings get placed on sheets of paper that are much smaller, a scale factor is required so that the final drawing has a usable conversion factor.

For instance, when drawing a door in CAD, the door would be 3 feet wide and 7 feet tall. For simplicity and clarity, CAD users draw buildings at full scale.

Autocad change to architectural units