Thats a better idea Hanaldo ,  and you read in microns ?

I just use the resin feed line itself. Once I'm ready to infuse, I don't need the gauge any more and just remove it. I used to tee it into other lines, but I hate having t-pieces and hoses everywhere. 

Thanks Hanaldo , i just bought the VG64 single port . Looking FWD to having a play with it.

Do I Plumb it into the resin feed line with a T piece to test  and then  clamp it off when infusing ?

I've got a Supco VG64 which works pretty well. I'm not totally convinced of its accuracy, but it has good resolution which is the important part really. You can see any vac drop in micron instantly. 

Hello guys

Can anyone recomend a good cheap  digital vacuum gauge ?

Thanks

Rod.