Ultrasonic Thickness Gauges
Ultrasonic thickness gauges measure a material's remaining wall thickness non-destructively from a single accessible side, used across infrastructure and asset inspection to check for corrosion, erosion, and wear. Options range from simple, low-cost gauges with basic numeric displays, suited to straightforward spot checks, up to premium instruments with color waveform displays, advanced measurement modes, and datalogging sold by quote at several thousand dollars. Two features drive most of the difference: single- versus dual-element probes (dual-element reads far better on corroded metal and is the standard for infrastructure work), and through-coat capability (measuring base metal beneath paint or coating without removing it). Many manufacturers offer multiple models or generations in this space, each entry represents a typical model rather than the vendor's full catalog.
Product List
| Company | Product | Description | Pricing | Pricing Link |
|---|---|---|---|---|
| Baker Hughes | DM5E | A premium corrosion gauge family from Waygate (Baker Hughes; the former GE / Krautkrämer NDT business), spanning a lightweight basic gauge through a full A-scan instrument with multiple measurement modes. | $2,050.00 | Pricing link |
| Coltraco Ultrasonics | Portagauge 6 | A British multiple-echo thickness gauge with a built-in database of common materials and a large onboard datalogger. Coltraco exports broadly across marine, fire-safety, and industrial markets, positioning the Portagauge line as a robust general-purpose field instrument. | N/A | N/A |
| Cygnus Instruments | Cygnus 4+ General Purpose | A flagship multi-mode gauge from a UK manufacturer that built its reputation on multiple-echo measurement and corrosion work, with a sunlight-readable live A-scan and hot-surface capability. Widely used in offshore, marine, and structural-steel inspection where reliable readings on demanding surfaces matter. | $2,029.52 | Pricing link |
| Dakota Ultrasonics | MX2-DL | A rugged, multi-mode corrosion thickness gauge built around a scope-style A/B-scan display that gives it capability well beyond its mid-tier price. Dakota is a US manufacturer known for durable instruments with generous onboard datalogging, popular across industrial and municipal inspection. | $2,850.00 | Pricing link |
| Danatronics | ECHO 9 | A US-made corrosion/precision gauge featuring a color, sunlight-readable display with live A-scan and B-scan plus large-capacity datalogging with spreadsheet export. Danatronics is a long-established transducer and gauge maker, and the ECHO 9 sits at the upper end of its handheld line for documented field inspection. | $3,195.00 | Pricing link |
| DeFelsko | PosiTector UTG | A modular ultrasonic wall-thickness gauge built on DeFelsko's interchangeable PosiTector platform, with swappable corrosion, multi-echo, and precision probes and a rugged IP65 color touchscreen. DeFelsko is a US manufacturer with a strong reputation in coatings and inspection instruments and broad public-works adoption. | $1,155.00 | Pricing link |