DeFelsko PosiTector DFTF Coating Thickness Gage
In the mechanical processing, steel structure construction, and industrial coating industries, controlling the thickness of anti-corrosive paint and protective plating on steel and iron surfaces is a prerequisite factor to ensure structural durability against environmental corrosion. The DeFelsko PosiTector DFTF coating thickness gage (the dedicated model for magnetic substrates) is a compact device featuring ultra-fast measuring speeds and reliable precision. It stands as a top cost-effective choice for inspection engineers and professional painters.

The PosiTector DFTF (Ferrous) is researched, designed, and manufactured entirely in the USA by DeFelsko – a globally renowned brand in surface inspection instrumentation. Unlike the PosiTector 6000 series which utilizes bulky interchangeable cabled probes, the DFTF series stands out with its ultra-compact, integral probe design that fits comfortably in the palm of your hand.
The device utilizes the magnetic induction principle to precisely measure the thickness of non-magnetic coatings (such as paint, plastic, rubber, galvanizing, chrome plating, and ceramic enamel) on magnetic metal substrates (iron, steel, cast iron). The gage fully complies with common international standards such as ISO 2178, ASTM D7091, and SSPC-PA2.
Key Features of the PosiTector DFTF
💡 Ultra-Durable Ruby-Tipped Probe – Scratch-Free Measurement
The probe tip of the PosiTector DFTF is engineered with a premium synthetic ruby material. The ultra-hard characteristic of ruby provides absolute wear resistance for the probe after tens of thousands of scans on rough mechanical surfaces, while simultaneously protecting freshly coated surfaces from scratches during operation.
💡 Ultra-Fast Measuring Speed with No Complex Calibration Required
The device yields a near-instantaneous reading response time (less than 1 second) as soon as the probe makes contact with the surface. Notably, the DFTF series is precisely calibrated right at the factory in the USA, allowing users to simply turn on the instrument and measure immediately on most common steel and iron surfaces without undergoing complex zeroing or test shim calibration steps.

💡 Smart Color Display with Auto-Rotating Functionality
The instrument comes equipped with a sharp, high-contrast color LCD screen, making it effortless to read measurement data in dimly lit factory floors or under intense outdoor sunlight.
The intelligent Flip Display feature allows users to easily monitor measurement values from any angle, even when flipping the gage upside down to measure under storage tanks or in tight, confined corners.
💡 Continuous Real-Time Statistical Updates
Despite its minimalist design, the PosiTector DFTF still integrates highly powerful statistical features. The gage continuously updates and displays core metrics of the current measuring session directly on the screen, including: Average, Standard Deviation (Stg Dev), Maximum (Max), Minimum (Min), and the total number of readings taken.
💡 Outstanding Durability in Industrial Environments
The gage achieves high durability thanks to its robust, impact-resistant plastic housing, accompanied by a convenient protective leather pouch with a belt loop. The device operates stably in harsh, dust-filled environments at sandblasting facilities or windy and sandy job sites.
Technical Specifications:
| Technical Features | PosiTector DFTF Specification Details |
| Brand & Origin | DeFelsko – Made in USA |
| Measurable Substrate Material | Magnetic metals: Iron, steel, cast iron (Ferrous – F) |
| Coating Measurement Range | 0 to 1000 um (Microns) or 0 – 40 mils |
| Accuracy | Ultra-low error margins, achieving high precision traceable to the US NIST standards Institute |
| Gage Body Design | Integral probe with ruby tip, smooth rubber navigation buttons |
| Complete Product Kit | DFTF gage body, plastic thickness shims, protective leather pouch, wrist strap, manufacturer’s calibration certificate |
Practical Applications of the PosiTector DFTF

Thanks to its exceptional portability, reasonable price point, and absolute measurement data reliability, the PosiTector DFTF is an indispensable pocket tool for:
- Steel Structure Fabrication Shops: Measuring the thickness of anti-corrosive primers and powder coatings on pre-engineered steel frames, industrial storage tanks, and pressure pipelines.
- Galvanizing & Hot-Dip Plating Sector: Verifying zinc coating thickness on threaded rods, steel pipes, and protective metal sheets that reinforce construction concrete structures.
- Automotive & Motorcycle Inspection: Measuring paint thickness on body shells to instantly detect areas that have undergone body-filler repair, fairing, or repainting due to accidents or scratches.
- Project Supervision & Auditing: Painting contractor crews and QC engineers utilize the device for rapid field validation of actual paint film thickness and coverage volume prior to project handover to investors.








tainguyen94
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Phạm Anh Vũ
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Trần Thu Hằng
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Thảo Minh
Máy cầm chắc tay, thao tác đo khá dễ hiểu nên anh em kỹ thuật bên mình làm quen nhanh. Mình dùng để kiểm tra độ dày lớp sơn và lớp mạ trên các chi tiết nền thép, kết quả hiển thị rõ ràng, tiện đối chiếu trong lúc nghiệm thu. Hàng DEFELSKO hoàn thiện tốt, cảm giác bền và chuyên nghiệp. Trước đây phải ghi chép, kiểm tra thủ công khá mất thời gian, giờ có máy hỗ trợ đỡ vất vả hơn nhiều. Shop đóng gói cẩn thận, giao đúng sản phẩm, tư vấn cũng nhiệt tình khi mình hỏi cách sử dụng ban đầu. Giá trị sử dụng ổn, phù hợp cho đơn vị cần kiểm tra lớp phủ thường xuyên. Rất hài lòng, đáng đầu tư 👍
Minh Anh
Máy dùng rất ổn, bên mình mua để kiểm tra độ dày lớp sơn và lớp mạ trên các chi tiết thép. Cầm chắc tay, thao tác khá dễ nên anh em kỹ thuật làm quen nhanh, đo nhiều vị trí cũng tiện. Kết quả hiển thị rõ ràng, hỗ trợ kiểm tra chất lượng bề mặt trước khi nghiệm thu đỡ mất thời gian hơn hẳn. Hàng DEFELSKO hoàn thiện tốt, đóng gói cẩn thận, nhận về nguyên vẹn. Mình đánh giá cao vì thiết bị đáp ứng đúng nhu cầu đo lớp phủ trên kim loại sắt của xưởng, dùng thực tế thấy đáng tiền. Ai cần máy kiểm tra màng sơn, mạ kẽm hoặc niken trên nền thép thì có thể tham khảo nhé. 5 sao 👍