I think this:
it has dials moving on a graduated dials.
Is better written as:
it has dials moving on a graduated dial scale.
Also, I think the measuring instrument of choice in this article is primarily that of analogue systems and not digital. Interesting article. Thank you for sharing it with us.
Yes Of course, analog instruments was primarily covered here because it operates on basic electrical principles.
However in my next post on Energy meters, I would be touching digital measuring systems a little, my research on it was quite interesting and I ll like to share!!!