ID help?

[Digger_O'Dell]

Found this at an 1850s homestead site. Has numbering/fraction scale along the notched slots. Stamped "AMS" in front of the first number.

Sent from my SM-N920T using Tapatalk

 

[del]

it reminds me and looks somewhat similar to a pour spout measure to a powder flask but I can't confirm it .