Questions about Auto CAD-drawing unit

 

1. Drawing the image in Auto CAD without additional units, that is, "unit is 1 ". The drawing unit must be explicitly marked by the drawing creator.

2. in Auto CAD, convert an English-level dimension image to a metric-level image:

First, the conversion rate of the two unit systems, such as 1 inch = 25.4mm, 1mm = 40 mil;

Then, select all the images that require unit conversion, execute the "graphic scaling" command, enter the reference point, and then enter the scaling ratio. For example, if the unit of the source image is inches, convert the image to millimeters, you can enter a ratio of 25.4.