BOOKOO E61 Tee&Gauge With E61 group heads (M6 thread)

Description

See What Your Espresso Machine Is Really Doing.

“Is my machine actually pulling the pressure I think it is?”

The Bookoo E61 Tee&Gauge answers that in real time. Every change you make to your grinder, puck prep, or OPV affects how pressure behaves during extraction, but without seeing it at the group head, you’re left interpreting the cup after the fact.

Installed directly on the E61 group’s M6 port, the Tee&Gauge gives you a live pressure reading exactly where extraction happens, turning every adjustment into an informed decision instead of a guess.

Install in minutes

The stainless steel T-splitter threads directly onto compatible E61 group heads through the M6 port, so installation takes only a few minutes without drilling or permanent machine modifications.

Included O-rings provide a secure, leak-free seal, letting you start monitoring pressure with minimal setup.

Watch pressure as the shot develops

The digital display shows live pressure from 0 to 12 bar throughout extraction. Watch pressure build during pre-infusion, stabilize under flow, and respond as the puck begins to break down.

Seeing these changes as they happen makes it easier to understand how grind size, puck preparation, and machine settings influence the shot.

Dial in with confidence

Whether you’re adjusting your OPV, comparing different coffees, or investigating unexpected pressure drops, live group-head pressure gives you information that simply isn’t visible from the cup alone.

Instead of changing multiple variables between shots and hoping for a better result, you can make informed adjustments based on what your machine is actually doing during extraction.

Built for everyday use

All water-contact components are made from stainless steel for long-term durability. The rechargeable gauge is powered by USB-C and delivers up to 24 hours of continuous operation, or up to 45 days of typical daily use. A 15-minute auto power-off function helps preserve battery life between brewing sessions.