[khorboth]

As others have said, it is about right, but is has other, less common bonuses as well.

I had a 3E supers gadgeteer with the advantage and got some real use out of it.

I got a bonus on figuring out other people's gadgets because I could see through the outer shell (unless it was armored thickly).

I also bought hyperspectral vision and 10 levels of microscopic vision and took the M-VH languages DOS and Macintosh so that I could visually read computer media.

I'd make sure to have a high perception and observation to get the most out of the advantage as well as look for good combos like these.