UPDATE: Using just the information in the post below I was able to find out what this device is (Google rocks). See if you can find the clue that helped me solve the riddle.
OK, I have some "stuff" laying around – some of it I’ve moved around the world with me, yet I have no clue what it is.
So where better to find an answer?
The first What is it? (WII?) device is almost all brass and is just under 5 inches long.
If has a viewing port on one end and a piece of glass on the other. The glass (photo 1 below) does have some type of scale on it.
So WII? Give me your answer in the comments.