You have an idea, and sttart your work. And you would like to know how big the object will be.
I have just finished to copy the grid feature of Tinkercad and 123Design. So you can see easily how many millimeters or centimeters your object will be.
It may seem obvious but I didn't think about it (or I didn't care while programming)... And that's why user testing is important !
On the following screenshots, we know the object is about 3cm x 2cm, and its height is 2mm.
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