I'm using the Circuit Specialists TDGC 0.5KM variac that many of us have and one that Bob recommends. It has the digital volt meter that is notorious for being inaccurate. Having only one outlet makes it impossible the measure output under load. Mine was almost a volt and half low.
Here's what I did; measured my Fluke test lead tip at .085 inch then took a 3/32 " drill bit; removed the end cap from the VTA120 fuse holder and drilled a small access hole in the cap. Drill from the inside, it will center and be almost invisible. Now I have an access point to set the voltage with the variac under load. The plastic on the fuse cap is thick enough not to present a shock hazard.
Just thought I'd share. Dale
Here's what I did; measured my Fluke test lead tip at .085 inch then took a 3/32 " drill bit; removed the end cap from the VTA120 fuse holder and drilled a small access hole in the cap. Drill from the inside, it will center and be almost invisible. Now I have an access point to set the voltage with the variac under load. The plastic on the fuse cap is thick enough not to present a shock hazard.
Just thought I'd share. Dale