You can measure the powder for one cup of coffee (approx. 12g) with one swing. By turning it upside down, one cup will accumulate, and when you turn it back on, one cup will move to the space under the spout.
The system allows you to measure the first cup with the lid on, and from the second cup onwards, you can measure the next amount when pouring into the dripper.
The wide mouth makes it easy to refill coffee. For medium-fine grinding, the capacity is approximately 160g.