Depending on the context or the noobs involved, among other things is used to make yourself sound fancy. But most of the time, it is used when telling a lie.
That phrase means that something being talked about is part of a group. For example, you might say that "among other things" french fries are popular at McDonalds. The "other things" are hamburgers,...
A ruler is an instrument for measurement used for: drawing a straight line making a technical drawing drawing margin in a book marking off measurements in fractions of an inch (1/8th) up to 12-inches...