Ultrasonic precision thickness gauges

Precision Thickness Gauges

Precision thickness gauges are ultrasonic instruments for thin, smooth materials where fine resolution matters: tubing, sheet metal, machined parts, plastics, glass and composites. The models listed are the Dakota NDT PZX1, PMX2-DL, PMX3-DL and PCX8-DL, plus the Waygate Technologies Krautkramer CL Go+. Seven Star LLC is the agency for Dakota NDT in Oman and the GCC. Unlike corrosion gauges, precision ultrasonic thickness gauges work with single element transducers, usually with a delay line.
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Waygate Krautkramer CL Go+ Precision Thickness Gauge Supplied by Seven Star LLC

Waygate Krautkramer CL Go+ Precision Thickness Gauge

Waygate Technologies
Dakota NDT PMX3-DL Precision Thickness Gauge with Color B-Scan
Dakota NDT PMX3-DL Precision Thickness Gauge with Color B-Scan

Dakota NDT PMX3-DL Precision Thickness Gauge (PVX Colour)

Dakota NDT
Dakota NDT PMX2-DL Precision Thickness Gauge with A-Scan Display
Dakota NDT PMX2-DL Precision Thickness Gauge with A-Scan Display

Dakota NDT PMX2-DL Precision Thickness Gauge (PVX)

Dakota NDT
Dakota NDT PCX8-DL Precision Thickness Gauge ultrasonic thickness meter
Dakota NDT PCX8-DL Precision Thickness Gauge ultrasonic thickness meter

Dakota NDT PCX8-DL Precision Thickness Gauge

Dakota NDT
Dakota NDT PZX1 precision ultrasonic thickness gauge for thin materials
Dakota NDT PZX1 precision ultrasonic thickness gauge for thin materials

Dakota NDT PZX1 Precision Thickness Gauge

Dakota NDT

Category guide

About Precision Thickness Gauges

5 products 2 brands

Precision thickness gauges are ultrasonic instruments for thin, smooth materials where fine resolution matters: tubing, sheet metal, machined parts, plastics, glass and composites. The models listed are the Dakota NDT PZX1, PMX2-DL, PMX3-DL and PCX8-DL, plus the Waygate Technologies Krautkramer CL Go+. Seven Star LLC is the agency for Dakota NDT in Oman and the GCC.

Unlike corrosion gauges, precision ultrasonic thickness gauges work with single element transducers, usually with a delay line.

How precision ultrasonic thickness gauges differ

A single element probe sends sound straight into the part, with no V-path, so timing is cleaner and the minimum measurable thickness is lower. The delay line separates the transmit pulse from the first echo, and the gauge can time between successive back wall echoes for the best repeatability. This approach needs two reasonably smooth, parallel surfaces. It is the wrong tool for pitted pipe.

Typical uses

Common applications are wall checks on heat exchanger and instrument tubing, incoming inspection of sheet and plate, machined component verification, and plastic pipe or molded part thickness. Fabrication shops and quality departments use them alongside mechanical micrometers where only one side is accessible.

Details to give when you request a quotation

State material, thickness range, required resolution, part geometry including minimum radius, and surface finish. The range here is small, and other models can be sourced on request.

What to include in your inquiry

These details let us quote the right item the first time.

  • Material and thickness range
  • Application (corrosion survey, weld inspection, bolt tension)
  • Instrument model, when ordering probes or accessories
  • Transducer frequency and type
  • Standards the inspection must follow

Missing some of them? Send what you have. A nameplate photo or an old part number is enough to start.

Brands in Precision Thickness Gauges

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Request a Quote for Precision Thickness Gauges

Looking for a specific model, part number or brand in Precision Thickness Gauges? Send us your requirements and quantities. Seven Star LLC sources genuine industrial equipment for customers across Oman and the GCC and replies with a formal quotation.
  • Genuine OEM products
  • Supply across Oman & the GCC
  • Formal quotation from our sales team
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Frequently Asked Questions

When should I use an ultrasonic precision gauge instead of a micrometer?
When you cannot reach both sides. A micrometer or caliper needs access to both surfaces, which rules out closed tubes, tanks, large panels away from the edge and assembled parts. An ultrasonic precision gauge measures from one side at any point on the surface. It does need a couplant, a known sound velocity for the material and a surface smooth enough for the probe to couple.
Can a precision thickness gauge measure plastics and composites?
Plastics, glass and many composites can be measured ultrasonically, but each material has its own sound velocity and some attenuate sound strongly. The gauge has to be set up on a sample of known thickness of the same material. Thick or fiber-reinforced sections may need a lower frequency probe or a high penetration gauge. Send us the material type and thickness range so the probe can be checked first.
Why do precision gauges use delay line transducers?
On thin material the back wall echo returns almost at once, while the crystal is still ringing from the transmit pulse. A delay line inserts a known path of plastic between crystal and part, so the interface echo and the back wall echoes arrive after the ringing has died away. The gauge then times between clearly separated echoes. The result is a lower minimum thickness and steadier readings.
Can a precision gauge be used for corrosion surveys?
Not reliably. Single element probes give their best results on smooth, parallel back walls. A pitted or scaled inner surface scatters the sound, and the gauge may lose the echo or lock on to the wrong one. For in-service piping, tanks and vessels use a corrosion gauge with a dual element probe. Some plants keep both types, using the precision gauge for new tubing and shop work.
What limits measurement on small-diameter tubing?
Curvature. A flat probe face touches a small tube along a narrow line, so coupling is poor and the probe rocks. Small element diameters, contoured delay line tips or a V-block probe holder help keep the beam perpendicular to the wall. Give us the minimum outside diameter and wall thickness you need to measure, and we will check the manufacturer's probe options for that geometry.