The first tab in that table lists various machine that can be used with connected power. The 2nd tab has gears to transfer power and the 3rd tab has some objects to produce power (e.g. the simple wooden hand crank).

You can make a hand crank and place it next to a gear, connect the gear to another (hover over it and press R) which is placed next to the gear part of e.g. a milling machine. That milling machine will then do its thing when you start producing power with the hand crank.

There is also a ready made windmill + milling machine not far from the spawn and the 4th tab in the F1 help (the gear icon) has entries for e.g. cogs and mechanical energy with moving examples pictures.