Modul8 output size matching

[freezer01]

Hey all I always seem to have trouble matching my output size with my screen. I have my 1st regular gig this week and wont have time to set up before the club opens. I need my preview screen to be the same dimensions as the projectors out put. Does anyone know the fastest way of doin this. Im over in Thailand so as you can imagine its very hard to just ask what the output size of their projector is.

Cheers guys

[deepvisual]

you set screen size in mac system preferences and preview in M8 preferences.

[freezer01]

understood but how do I know what dimensions to set the screen/preveiw size to match the output/projector