Marine Gauge – Tubular Level Gauge for Marine & Offshore

The John Moncrieff Ltd Marine Gauge is engineered for marine and offshore duty. Its tubular design delivers clear, reliable level indication on vessels and rigs — for non-flammable liquids only. For flammable service, specify our G35 Seemag or G31 Seeflex.

Typical onboard uses include water storage and coolant tanks on cargo ships, tugs, and military vessels. On land, the unit is also suitable for diesel and fuel oil applications.

Approval & Compliance

• Conforms to: EN BS ISO 10088 (Recreational Craft Directive)

Example Applications

• Diesel (on-land applications)
• Fuel oil (on-land applications)
• Lubrication oil (on-land applications)
• Water
• Coolant
• Chemicals
• General liquid storage

Key Features

• Delivery: 4–5 weeks or less.
• Connections: ½″ or ¾″ BSP and NPT female fittings.
• Push-Button Operation: Spring-loaded valve reseals the gauge — damage-resistant; liquid cannot escape.
• Easy Cleaning: Gauge tube can be removed for cleaning while valves remain sealed.
• High Visibility: Magnifying coloured strip highlights colourless liquids for quick reading.
• Mounting Options: Flanges (DN or ANSI) available; welded boss option.
• Valve Materials: Brass or stainless-steel valves to suit environment.
• Lengths: Up to 5 m+.
• Tubing Options: Acrylic tube available.
• Protection: Robust tubular guard to shield the gauge tube.
• Graduations: Graduated versions available — units marked on the guard tube or on an engraved scale plate.

Quality & Support

• ISO 9001: Manufactured under a BSI-audited quality management system.
• Documentation: Material traceability and certificates available upon request.
• Technical Help: Application engineering support for specification, sizing, and compliance.

Built for shipboard realities — rugged, readable, and easy to service. Specify the Marine Gauge to keep level checks simple and reliable at sea.

Technical Specifications: