Reference scaling in CAD refers to the scaling operation of external objects such as reference drawings or reference blocks during the drawing process. This feature is very commonly used in CAD software to help us draw and design more accurately.
To zoom by reference, you first need to import the reference diagram or reference block into the CAD software. There are several ways to import, and you can import it with the "Insert" command or the "Attach" command. When the import is complete, the reference diagram or block is displayed in the drawing area as a rectangular box.
Next, we need to select a reference diagram or a reference block. There are several ways to select, either by clicking on the rectangle with the mouse, or by using the Select command. When the selection is complete, the reference map or block is highlighted.
Then, we need to use the Zoom command to scale the reference diagram or reference block. There are several ways to choose from the zoom command, the most common of which is to use the Zoom command or the zoom icon on the Zoom toolbar. Once we have selected the scale command, CAD prompts us to select a base point, which is the center point of the scale. We can select a point as the base point by clicking the mouse, or we can directly enter the coordinate value. After selecting the base point, CAD prompts us to enter a scale or scale factor. The scale ratio refers to the proportional relationship before and after scaling, and the scaling factor refers to the increment or decrease of the scale.
When performing the reference zoom operation, we can select a value with a scale greater than 1, which will make the reference image or reference block enlarge;You can also choose a value with a scale of less than 1, which will shrink the reference image or block. If we choose a negative zoom factor, the reference plot or block will be flipped.
After the zoom operation is completed, we can use the "Move" command or the "Move" indicator on the "Move" toolbar to move the reference map or reference block. The Move command works in a similar way to the Zoom command, by selecting a base point and entering a movement distance or movement vector.
It is important to note that the reference zoom operation only affects the reference map or reference block, and does not affect other drawings and objects in the drawing area. If we need to scale the entire drawing area, we can use the Zoom command or the zoom icon on the Zoom toolbar.
To sum up, the reference zoom operation in CAD can help us to draw and design more accurately. By selecting a reference map or block and using the Zoom command, we can zoom in, zoom out, or flip it. At the same time, we can also use the move command to move the reference image or reference block. All of this can be done by finding the corresponding command or toolbar icon in the CAD software.
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