Rookie Qu. re- VC in Cessna 172 & Tacho

Hi all,Don't know if this has been answered elsewhere but I searched and came up with nada.When using the VC on the Cessna 172 I can't see the tacho...without taking a paintbrush to the yoke and rendering it invisible (which I understand is one valid method) is there another way to determine engine speed ?Pls note, I'm new to Flight sims and have only just completed Rod Much-gung-ho's flight school... but fairly sure it's quite important to see engine speed ?Cheers,