The only scales we use in our cafes.
From the manufacturer:
Designed for espresso machine drip trays, the Acaia Lunar is aesthetically functional for your weighing needs. The espresso scale is built with anodized aluminum. Its electronic parts and LED display are treated with a water-resistant spray to prevent water damage.
With an ultra-fast response time and high accuracy, you'll be able to track consistency across all of your espresso shots.