Thickness Gauge Rentals

These instruments are used whenever the corrosion of steel and its thickness is a concern or to inspect coatings. Our ultrasonic thickness gauge rentals are commonly used for measuring the material thickness of pipes, tanks, ship hulls, and various containers or pressure vessels. While our holiday detector rentals are used to inspect the coating. Ultrasonic thickness gauges can take highly accurate thickness measurements from one side of the material and have a wide range from as thin as 0.04 inches up to 20 inches thick at a resolution of 1/1000th of an inch. Our holiday detectors are easy to use and allow you to quickly find abnormalities in coatings before material deterioration.

Extech TKG250

Ultrasonic Thickness Gauge - Material Thickness

Extech TKG250

The TKG250 is an advanced ultrasonic thickness gauge that remains easy to use for simple tasks while still providing advanced features. With many modes including echo to echo for ignoring coatings, B-scan, A-scan, adjustable alarms, differential readings, and real time historical comparisons for corrosion monitoring, the TKG250 is capable of accurately measuring the thickness of steel for the simplest to the most complex jobs. The large color LCD display provides easy to read results quickly and can even display live waveforms. All of our ultrasonic thickness gauge rentals include datalogging and advice from our experienced engineers.

Material Thickness (Steel)
0.040 to 20″
1 to 508 mm
Resolution .001″ or .01 mm
Accuracy up to .001″ or .01 mm, typical .004″ or .1″
  • Easy to use and powerful handheld ultrasonic thickness gauge
  • Wide measurement range, up to 20″ thick at a 1/1000th inch resolution
  • Fast minimum thickness mode
  • Live waveform graphical display in addition to numerical readout
  • A-scan and B-scan modes
  • Alarm mode with vibration
  • File compare mode for real time corrosion comparison
  • Ignores coating with an echo to echo mode
  • Display in standard or metric units
  • Large backlit color LCD graphical display
  • Datalogging
  • PC interface
  • Datalogging points 100,000
  • PC interface USB
  • Input power 2 AA Alkaline batteries
  • Runtime ~ 50 hours
  • Operating temperature -4 to 122°F
  • Dimensions 5″ x 3″ x 1.25″
  • Weight 8 oz
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SPY 785

Holiday Detector - Coating Thickness

SPY 785

The Spy Model 785 is designed to take the guesswork and complication out of holiday detection. Designed for inspecting coatings on tanks and pipelines, our holiday detector rental instruments feature a range of 4 to 150 mils, automatic voltage compensation, and the ability to select any voltage along the entire operating range. These portable holiday detectors are excellent for field work and include 2 hot swappable batteries to insure you don’t have to stop until the job is done. Holidays are indicated by both a visible and a loud audible indicator for use in noisy environments.

Coating Range
4 to 150 mils
Voltage Range
1 to 15 kV
Accuracy ±5%
Voltage type pulse
  • Infinite voltage range settings
  • Automatic voltage stabilization
  • 2 eight hour batteries with quick swap function
  • audible and visual holiday indicators
  • LCD display with voltage reading to indicate setting
  • Input power rechargeable quick swap battery
  • Runtime ~ 8 hours per battery
  • Operating temperature -40°F to 148°F
  • Dimensions 21.5″ x 5″ x 8″
  • Weight 7.45 lb
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  • Extech TKG250
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