Mechanical advantage is the amount of help you get using a machine in comparison to doing something with just human effort, and it is created by levers. Therefore, the mechanical advantage = 200 ...

Mechanical advantage is the amount of help you get using a machine in comparison to doing something with just human effort, and it is created by levers. Therefore, the mechanical advantage = 200 ...

While this stylish lever-based industrial coffee machine made by [exthemius] doesn’t exactly make textbook espresso, it’s pretty darn close. Think of it like an Aeropress on steroids ...

Lever machines were key in making espresso popular throughout Italy and eventually worldwide, with Gaggia’s lever-driven ...