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In Figure A3, what should be the length and width of the CAD arrows?
1. Whether it is A1, A2, A3, A4 or an enlarged version, the first step is to set the paper size ratio. 2. There are no clear regulations regarding dimensioning in CAD; the size you set should be one that allows you to see the details clearly. The arrows and dimensions are therefore the same as well! 3. Some systems have default sizes that do not need to be adjusted manually; and even if adjustments are made, they are not necessarily in integer multiples. It’s meaningless!
The overall proportion and coordination are the main considerations.