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Placing the pins on footprint creation the dimenionsing is been ge loss of accuracy?

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Hi.

I had created and epcos inductor with the pitch to pitch spacing of 9.91 mm. My doubts are.. 1). How to place the 1st pin with the symbol origin, whether symbol origin is been in middle of pin or left bottom of pin.   2) when i am placing the from the center of the pad the dimension is been measured, from there the dim is 9.91 mm, but when i am try to dimension means the display dimension is is 8.9 mm.  i don't know the problems what is been get occured.

From the pad pitch to pitch spacing is 9.91 mm, but dimension shows is 8.9 mm. Then i try to dimension the pads in symbols, that time the dimesnion size been get bigger in size.

Then other one doubt , what is need for the scale factor in the dimension parameter. so can anyone provide the solutions for above doubts???


Thanks & regards

Dhamodharan

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