Noob PSI Question

[Kahnighticus]

Does anyone know what the difference between PSI at the guage and actual PSI in the keg are?

If I want my PSI in the keg to be 12, do I set it to 12 on the guage, or do I set it higher?

[Scott Zuhse]

If your gauge is accurate and you desire 12 PSI in the keg, set your regulator gauge to 12 PSIG. Be certain to test your pressure system for leaks.