Compact 38 mm deck filler gauge from Systems that displays tank level at the filler and on NMEA2000® instruments, with a clear blue LED and single‑plug installation for straightforward monitoring. The 38 mm refers to the visible filler surround; it fits standard 50 mm (2\") tank pipe openings.

• Blue LED level display with auto-dimming for sunlight and night
• 38 mm (1.5\") deck filler surround with laser-etched \"DIESEL\" label
• Fits 50 mm (2\") tank pipe openings
• Mirror‑polished stainless‑steel cap with octagonal key and heavy‑duty O‑ring
• NMEA2000® certified - single plug to the bus, visible on existing instruments
• Constructed to IEC60945 maritime standard for long-term reliability
• Helps prevent fuel spills during refuelling and can help maximise range from full tanks