Problem with curve sizes

Hello,

folowing problem:
I have 3 Logos made of curves and a circle bevel object. I want the Logos in three sizes with the same diameter of 16mm.

I used the same bevel object for all three curves but the diameter is not the same. It doesn’t matter if the scale is 1 or not. Here it’s 1.

I don’t know how to solve this. Anyone knows?

Thanks
Ean

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