Cygnus Underwater Ultrasonic Thickness Gauge

Available as:
  • Rental
  • Sale (new & ex rental)

Available for rental/hire, the Cygnus Underwater Ultrasonic Thickness Gauge

This hand-held digital ultrasonic thickness gauge for underwater use, measures metal thickness to determine defects caused by corrosion without removing surface coatings. The Cygnus 1 Underwater is supplied with 2 rechargeable batteries, battery charger, probe, spares kit, test block, operating manual and transit case.

Sale Information
Call for sale options

Key features

  • Watertight and pressure tested to 300m depth
  • Double O ring seal arrangement to ensure reliability
  • Remote probe with 1.35m lead for measuring in awkward locations
  • Rugged construction
  • Stable calibration linear accuracy no zero adjustment
  • 200mm measurement range
  • Rechargeable batteries with charger
  • Usable on metals and other materials
  • On switch is only control automatic Off
  • large/Bright LED display
  • Metric/imperial selectable


  • Metal thickness and corrosion checks on offshore structures and ships
  • Safety corrosion monitoring of pipelines and storage vessels
  • Metal thickness / wear checks on anchor chains, jetties, dock gates, piers and pilings
  • Ships classification surveys
  • Maintenance and safety checks on bridges

Technical specifications

MaterialsSound velocities between 2,000 and 7,000 m/s.
Materials Range3mm to 250mm (with 2.25MHz probe)
Accuracy± 0.1mm or ± 0.05mm selectable
Resolution0.1mm or ± 0.05mm selectable
Depth Rating300m (IPX8)
Operating Temperature-10°C to +50°C
PowerNiMH rechargeable battery pack
Battery Life30 hours (continuously measuring)
DisplayLarge, bright LED display
Environmental ProtectionIPX8 continuous 300 m rating
ComplianceCE, British Standard BS EN 15317:2007
EnvironmentalRoHS, WEEE compliant


Weight950 kg
Size235 x 75 mm