Need to step away from the espresso machine after starting the shot? Auto-Tare Timer Starts with Flow mode, also represented by ▫️💧 , is the mode for you. The 4th Lunar mode is helpful for baristas who multitask and want to keep an eye on the total flow time of their espresso extractions. Once the weight reading is stable, the scale will perform the auto-tare operation. After the scale detects the espresso flow, the timer starts automatically. The timer will stop automatically when the espresso flow stops.