Valve Clearances - What are we actually measuring?

What are you actually measuring when you check and/or adjust the valve clearances on your Honda CB125E? Lets take a quick look..

[@Koimith]

Thank you, I look forward to the in bike check and/or adjust the valve clearances on your Honda CB125E

[@highoctanecommuting3862]

Thanks Pete, hopefully these videos might help someone somewhere! :)