Halcyon Gauge

Master SPG
The Halcyon Master SPG is built with a rugged chrome-plated brass housing and a tempered glass lens, engineered to withstand the demands of any dive.

Dual-Scale, Durable, Glow-in-the-Dark, and Diver-Tested

This gauge features a clear dual-scale display in PSI and BAR, providing precise pressure readings at a glance—ideal for divers who travel or dive with mixed-unit systems.
The glow-in-the-dark face ensures excellent visibility in low-light, night, or overhead environments.

A favorite for both backgas and stage/deco bottles, the Master SPG uses a clean white-on-black display with a red low-pressure warning zone.
Made in Italy and quality-checked in the USA.

Master SPG – Specifications

• Chrome-plated brass housing

• Tempered glass lens

• Dual scale (PSI/BAR)

• Diameter: 63 mm / 2"

• White-on-black display, glow-in-the-dark

• Red zone indicator for low pressure

• Compatible with standard HP hoses

• Made in Italy; individually tested in the USA

• Delivered without protective boot