Cygnus is the leading manufacturer of ultrasonic thickness gauges employing the Cygnus-Pioneered Multiple Echo technique to give accurate, error-checked metal thickness measurements through coatings. The Cygnus range of thickness gauges include: the RINA approved Underwater model designed for divers taking thickness measurements up to 300 meter depth; Intrinsically Safe model certified to ATEX {Ex} I M 2 Ex ia I Ma (Ta = 0 to 45 C) {Ex} II 1 G Ex ia IIC T6 Ga (Ta = 0 to 45 C); Cygnus 2 Hands Free model engineered for rope access applications; highly versatile Cygnus 4 with a large LCD display, simple-to-use keypad and menu; Data Logger model enabling easy logging of measurements of symmetrical structures; ROV mountable series with probe handling solutions and Heavy Duty model. In addition to thickness gauges, Cygnus carries two other ultrasonic product lines of Cygnus Hatch Sure for testing weather tightness of hatch covers and CygScopes R and RD industrial leak detectors.