First I made this version: https://www.myminifactory.com/object/3d-print-133574
But I noticed it could be improved by changing it's shape. This conic shape allows you to visualy check the amount of liquid you poured.
Cup to measure shots. In total it has 2 shots.
Each shot = 1 ounce / 30ml
Each mark = 1/4
There isn't much to go wrong in here... I guarantee the volume of each marking is pretty close.
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