Coley jigger (also called a handled double cocktail jigger). [1]
Key Characteristics
Function: It is a dual-sided bar measuring tool used by bartenders to accurately measure liquid ingredients for cocktails. [1, 2]
Design: It features two distinct measuring cups separated by a central stem and connected by a prominent loop handle. The handle allows the user to hold and flip the jigger cleanly between fingers without transferring body heat to the liquid or getting syrup on their hands.
Capacity: The bottom side is clearly marked for 25ml (commonly used for a single spirit measure). The top side typically measures a larger volume, usually 50ml.