Worked in field installation of gas and electric meters and I went to a few conferences probably 5+ years ago where aug reality would be used to help installers complete there work. The idea is they would have basic training, but could get help from a few "expert" technicians in a central location, this could be by highlighting fault areas of the meter in the goggles. There was a lot of interest, but as far as I'm aware it hasn't gone anywhere yet.