From Youtube
This device comprises a mechanically driven peristaltic pump which pulls liquor from a bottle into a graduated separatory funnel serving as a measuring device, after which a precisely measured shot can be deposited into a glass.
From Youtube
This device comprises a mechanically driven peristaltic pump which pulls liquor from a bottle into a graduated separatory funnel serving as a measuring device, after which a precisely measured shot can be deposited into a glass.