Mechanical timer

[Skrulla]

Hello.

I got an old venner mechanical timer and need some advice. I need to connect it to a unit, how would one do that? It is a, b and c outputs. Wich to use?

https://imgur.com/a/aISConH

Thanks for help.

 

[w0z]

Permanent live to rhs clock permanent neutral to other clock terminal, this will keep clock going.
And guessing..
Live to C and either A or B will become switched live when on or off (when A is on B will be off and vice versa) Choose whichever suits what you're doing - if it's on when it should be off swap B with A.
Do check for continuity with a test meter before you connect mains to it, just turn clock until it clicks and measure between C and B (or C and A)