Clear Specify On-Screen and enter values under Insertion Point, Scale, or Rotation.Select Specify On-Screen to use the pointing device to insert the image at the location, scale, or angle you want.How do I resize an image in AutoCAD 2020? You can then use the Scale tool to set the scale for that viewport. Center your view in the viewport, and make sure it’s set to a 1:1 scale. Setting the Scale in a Paper Space Viewport Select No from the Display Locked menu in the Properties panel. How do I change the scale of paper space in AutoCAD? Step 3: Select Adjust Size on the drop-down menu. If Preview is not your default image viewer, select Open With followed by Preview instead. Step 1: Right-click on the image and select Open. Length and area measurements will be inaccurate, and your site plan will be generally off. If these items are set incorrectly, objects in your drawing will appear in the wrong size. Setting the correct scale and units is immeasurably important. Open up the Crop tool (Tools>Pages>Crop) and first select to “Change Page Size” to a custom size of 8.5″x11. Then, multiply your measurements by the first number in your ratio to increase the size. Next, choose a ratio to resize your drawing, such as 2 to 1 to double the image in size. To scale a drawing by hand, start by measuring the width and height of the object you’ll be scaling.