Scaling operations in AutoCAD are divided into four types: view scaling, object scaling, layout viewport scaling and overall drawing scaling. 1. View scaling includes real-time scaling (Z real-time) and window scaling (ZW), which only adjusts the display size and does not affect the actual size; 2. Object scaling uses the SCALE command to modify the object size by specifying the base point and scale factor, which is suitable for the size adjustment when block insertion; 3. Layout viewport scaling is set through ZOOM XP or view scale, which is used to adapt to the printing ratio, such as 1:100; 4. Overall scaling also uses the SCALE command to select all the graphics and scale uniformly, but the labeling style needs to be set in advance to avoid text and labeling deformation. Different scaling methods correspond to different uses. You should select the "View" or "Modify" commands according to your needs to ensure accuracy.
Scaling graphics is a very common operation in AutoCAD, especially when you need to adjust the drawing scale, adapt to the layout space, or prepare to produce the drawing. Mastering the correct scaling method can not only improve efficiency, but also avoid low-level but large-scale problems such as errors in proportion.

Zoom view: Real-time zoom and window zoom
If you just want to resize the display size of the current view, instead of changing the size of the graphics itself, you can use "Real-Time Scaling" or "Window Scaling".

- Zoom Realtime : Click the magnifying glass icon on the toolbar, or enter
Z
and press the prompt to select "Real Time", and then drag with the mouse to zoom in or out. - Window zoom (Zoom Window) : Enter
Z
, enterW
after Enter, and then select an area in the drawing area box. AutoCAD will enlarge the area to the entire viewport.
These methods are suitable for viewing details, without modifying the actual size of the figure, and are suitable for quick browsing in the modeling space.
Scaling objects to scale: Use the SCALE command
If you want to really change the size of an object in the graph, you need to use the SCALE
command.

The operation steps are as follows:
- Enter
SCALE
and enter - Select the object to scale and enter
- Specify the base point (the center point of the zoom)
- Enter the scaling ratio (for example, 2 means twice in size, 0.5 means half in size)
This function is especially suitable for resizing when copying or inserting blocks. For example, when inserting a standard door block but need to be adapted to different wall thicknesses, you can insert it first and then zoom.
Zoom layout viewport: adapt to print scale
If you process drawings in the layout space and want the graphics in the viewport to be displayed at a specific scale (such as 1:100), you need to set the scale of the viewport.
Operation method:
- Double-click to enter the viewport
- Use the
ZOOM
command, enterXP
and add the scale value (such as0.5XP
represents a 1:2 ratio) - Or right-click the viewport and select the appropriate option in "View Scale"
Note: The viewport ratio will affect the print output, so it must be set accurately according to the drawing requirements. Sometimes, although the graphics look the same, if the scale is not correct, there will be problems printing it out.
Scaling the overall drawing: a method to adjust the proportions uniformly
Sometimes you have finished drawing a picture but find that the unit or scale is not appropriate. At this time, you may need to scale the entire picture as a whole.
Suggested practices:
- Use the
SCALE
command to select all objects - Set a corner point as the base point
- Enter the appropriate ratio (for example, if you convert from millimeter to meter, it is 0.001)
But be aware that this approach changes the size of all labels and text unless you set the label style to "Use Global Scale" or "Measure Scale" before scaling.
Basically that's it. Different scaling uses are different. If you want to "see clearly" or "change the size", you can choose the right command.
The above is the detailed content of How to scale in AutoCAD?. For more information, please follow other related articles on the PHP Chinese website!

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