What is some useful or interesting mechanical technology? Stuff that works without the use of electricity

What is some useful or interesting mechanical technology? Stuff that works without the use of electricity.

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Internal combustion engines are pretty cool.

You can power a lot of stuff using compressed air, instead of batteries. Power tools are the natural example.

All the useful non-computer technologies are more the domain of /diy/.

>doesnt into mechanical calculators
NGMI

Bicycle

Good answer

Minute repeater watches. youtube.com/watch?v=CZxo-fXscxg

Regina Music Box
youtube.com/watch?v=QlH6DXZHAtI

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aeropress
fresnal solar lens
evacuated solar tubes

Ford Windsor 302 is the beast
Essex 232
Mopar 6 inline family

But the compressor users electricity

The best example of freedom!!!

engine
gearbox
wheel

the clock

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Pen and paper.

>engine
Because engines ignite gasoline and oxygen with pixie dust, right?

One of these.

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deezle :EZY:

Guns?

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