Inside every gadget and appliance is a complicated network of electronics and machinery. We don’t usually get to see this stuff unless we drop our phone on the ground and it breaks completely in half, so relish this opportunity to see what makes some of our most treasured belongings tick.

The inner workings of these machines are just as interesting from the tiniest USB cable to a gigantic cruise ship. Some of them are packed to the brim with dense wiring and gears, while others have a surprising amount of empty space inside them.

Take a look at these mechanical cross-sections if you want to gain a greater appreciation for the engineering that goes into some of our common household doohickeys.