Would LOVE any feedback from you guys, All feedback helps me make it better which makes it better for everyone who uses them!

Bit of background: I've had a bunch of PCB rulers and you end up needing a lot of different types to get a decent all-round collection of component footprints, they're also not easy to carry around in your pocket or wallet so you end up leaving them in the lab. I originally made a PCB business card for my company with some footprints and other bits on it (image of this on the link) and ended up using this more than any of my pcb rulers, I could keep it with me in my wallet and it was great, everyone techy I met wanted one and I must have given over 1,000 out by now

From that I constantly thought 'why has noone made a more complete set of these' and eventually decided to continue developing it myself and months of work later, created the most complete electrical engineering reference cards around that are also portable, and now have a number of other sets for different fields to help in the same way, after teaming up with people who work in different industries from photographers to doctors, we've been developing a bunch of upcoming sets for photography, design, computing, medical, science and a lots more!