What the Fork is this Old, Metal Colorado Contraption?

I have no forking idea what this old, metal Colorado contraption is. Take a look to see if you know what this contraption is that was popular in the 1950s.

My first thought when I saw this was 'is that a protractor?' and the truth is, I have no idea what it is. The Johnstown Historical Society posted these pictures on their Facebook and they have me stumped.

A couple of clues in figuring out what in the fork this is are:

• They were popular in the 1950s
• Weren't in every home, but 'a cultured lady probably had a few in the kitchen'

Since it's something that's used in the kitchen, it's definitely not a protractor. My next guess would be it's something to squeeze lemons/limes, probably for cocktails. Some of the guesses on Johnstown Historical Society's Facebook include:

• Nose hair plucker
• Table cloth clip
• Corn on the cop handle
• Olive pitter

Let us know what in the fork you think this kitchen utensil is in the comments.