This is the first of (I hope) many other collections. Its title speaks for itself, I suppose. In this collection, you'll have the diagrams for my simple but nice versions of:
You can find the single models available for download here in the website, but you can save 20% of your money if you download the collection.
I suggest you to use paper with these features:
Size: 15*15 cm2;
Weight: 80 g/m2.