A simple dosimeter, which I would prefer with a slightly thicker glass. For its price, it's perfectly fine.

Very high quality! It has slipped 2-3 times from a small height (20-30cm) and it didn't suffer any damage at all. Generally, when washing it with water (especially with soap), it requires great caution because it is incredibly slippery due to its small size.

I make 2 coffees every day with a Gaggia Classic 2018 and it has helped me immensely with dosing, along with the timer I use: 20g of coffee in an IMS Baristapro basket, extraction of 50-60ml (lungo) in 28-32 seconds.

Although the price is a bit steep, I would say it's worth the money in the end!