Toy weigher (SET2: DIGITS ONLY)

Printable toy weigher - learning children numbers,arithmetic and concepts more, less, equal. 
Each digit has a weight equal to the number - 1 - 1 g, 2-2 g, and so on. How heavy the star you have to know yourself. We can solve simple arithmetical: 2 + 1 = 3, 3 + 4 = 7, 1+2<5 etc.

It contains two sets for 3D printer (STL format):
1.  Details of the weighter (see https://www.shapeways.com/product/VACBDN5EQ/toy-weigher-set-1-only-weigher-parts )
2. Numbers and star. (this model )