• Tubular Gauge Glass - Red Line

Tubular Gauge Glass - Red Line

  • Product Code: Tubular Gauge Glass - Red Line

Red & White Line Tubular Gauge Glass

John Moncrieff Ltd supplies tubular gauge glass with enhanced red and white meniscus lines designed to improve visibility and accuracy in liquid level measurement. These indicators are applied using a specialized bonding process that eliminates the need for glass etching, preserving the full structural and pressure integrity of the tube.

Key Benefits

  • Enhanced Visibility: Red and white contrast lines deliver clear, accurate level indication across a wide range of lighting conditions.
  • No Pressure Rating Reduction: Low-temperature curing process maintains the tube’s original pressure rating and mechanical performance.
  • Durable & Reliable: Bonded surface markings ensure long-term adhesion, clarity, and resistance to thermal cycling.

These high-visibility gauge glasses are ideal for applications requiring quick, precise liquid level monitoring — including chemical processing, boiler systems, and industrial tanks where accuracy and operator readability are critical.

Technical Downloads:


Standard Tank Gauge

Standard Tank Gauge

SKU: Standard Tank Gauge

Standard Tubular Level Gauge The John Moncrieff Ltd Standard Tubular Level Gauge is designed for reliable and accurate level monitoring on tanks and sealed vessels. Availab...

Quickmount Tank Gauge

Quickmount Tank Gauge

SKU: Quickmount Tank Gauge

Quickmount Tank Level Gauge The John Moncrieff Ltd Quickmount Tank Level Gauge is our most popular unit — engineered for general industrial use where reliability, serviceab...

Boiler Water Level Gauge

Boiler Water Level Gauge

SKU: Boiler Water Level Gauge

Our standard Boiler and Water Level Gauge is offers a robust design suitable for lower pressure Boilers and General water Level applications. Auto Shut off Valves as Standard, Lever Operated, Superior...

Marine Gauge Push Button

Marine Gauge Push Button

SKU: Marine Gauge Push Button

The Marine gauge is designed for use within the marine and offshore industries. Due to its tubular design this gauge is suitable only for use with non-flammable liquids. For flammable see either our G...

Mini Gauge

Mini Gauge

SKU: Mini Gauge

Mini Gauge is an effective yet simple tubular gauge. Its valve less connection ends screw directly into the vessel and commonly used for compressor lube oil tanks or small water tanks or in the case...

Oil Sights

Oil Sights

SKU: Oil Sights

Our Oil Level gauge is a very simple brass and heat proof glass tubular level gauge unit to provide level indication, primarily on oil tanks. As standard they are fitted from the base, but a double b...

CPI Gauge

CPI Gauge

SKU: CPI Gauge

The CPI Tubular Gauge (Chemical and Process Industries) is designed to provide direct level observation of chemicals and solvents.For applications with higher pressure requirements, or where a more r...

Push Button Gauge

Push Button Gauge

SKU: Push Button Gauge

Our basic push button tubular level gauges provide a very simple level monitoring solution. They offer a clear rigid PVC tube, that can be cut to any length to suit your application.The unit is fitte...

Rubber Cones / Square Section Rubbers

Rubber Cones / Square Section Rubbers

SKU: Rubber Cones

John Moncrieff — Rubber Cones & Square Section Rubbers for Boiler Applications At John Moncrieff Ltd, we supply a wide range of high-quality rubber cones and square section rubber...

Tags: red line tubular gauge glass, red white line gauge tube, enhanced visibility gauge glass, level gauge tubing red line, borosilicate gauge glass red stripe, John Moncrieff red line gauge glass