IPA: /ˈɡeɪdʒər/
KK: /ˈɡeɪdʒər/
A person who measures or inspects the quantity or quality of goods, especially those that are subject to taxes or duties.
The gauger checked the barrels to ensure they met the required standards.
Gauger → It is formed from "gauge" (from Old French *gauger*, meaning to measure) and "-er" (meaning a person who). A gauger is a person who measures something.
Think of someone who 'measures' ('gauge') things — that's what a gauger does.