| Grade | Range (mils) | Range (µm) | Recommended Measurement Tools |
|---|---|---|---|
| Coarse Minus | 0.5 – 1.0 | 12 – 25 | Testex Digital Micrometer, Testex Analogue Micrometer, PosiTector RTR H |
| Coarse | 0.8 – 2.0 | 20 – 50 | Testex Digital Micrometer, Testex Analogue Micrometer, PosiTector RTR H |
| X-Coarse | 1.5 – 4.5 | 40 – 115 | Testex Digital Micrometer, Testex Analogue Micrometer, PosiTector RTR H |
| X-Coarse Plus | 4.0 – 6.0 | 100 – 150 | Testex Digital Micrometer, Testex Analogue Micrometer |
Testex® Micrometers
Precision Measurement of Testex® Impressions
A Replica Tape Micrometer is the essential partner to Testex® Press-O-Film™ tape, providing the precise, standardised pressure and resolution required to measure the compressed tape accurately. Available in digital or analogue models, these micrometers deliver quick, repeatable readings that meet all major international standards.
Whether you are verifying blast-cleaned steel before coating or documenting QA records for an industrial contract, a calibrated micrometer ensures every Testex impression is measured with confidence and traceability.
Features
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Available in Digital Spring Micrometer (large LCD, switchable µm/mils) or Analogue Dial Micrometer.
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Precision-ground anvils and calibrated spring pressure ensure repeatable measurements.
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Compact, rugged housing for dependable field performance.
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Supplied with a hard carrying case and reference shim for quick zero checks.
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Resolution of 1 µm (0.1 mil) with accuracy typically ± 2 µm, meeting ASTM D4417 Method C.
Why Measuring Matters
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Critical for Coating Performance – Verifies that the blast profile meets specification so coatings bond securely and resist corrosion.
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Consistent, Standardised Force – Specially designed spring mechanisms apply a repeatable measuring pressure, eliminating operator error and meeting ASTM D4417 Method C.
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Traceable QA Evidence – Combine stored impressions with micrometer readings for a permanent audit trail that satisfies client and regulatory requirements.
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Portable & Robust – Lightweight, compact, and built for tough site conditions, making it easy to carry to scaffolding, shipyards, or remote locations.
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Works with All Tape Grades – Compatible with Coarse, X-Coarse, and specialty Testex grades for maximum flexibility.
Why Choose DFT?
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DeFelsko Partner Since 1998 – Over 25 years as the UK distributor for DeFelsko ensures unrivalled knowledge and direct manufacturer support.
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Authorised UK Calibration & Service – Each micrometer is supplied with a long-form Certificate of Calibration traceable to PTB/NIST, and we offer fast local recalibration and servicing.
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Comprehensive Range & Stock – Choose from digital or analogue models, with accessories and check shims available from UK stock.
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Expert Technical Guidance – Our team provides training and advice on correct measurement technique, periodic verification, and integration with digital readers such as the PosiTector RTR.
Testex® Digital Micrometer
The Testex Digital Micrometer makes using Testex Replica Tape even easier. It is custom-designed to be the optimal tool for measuring replica tape, and makes taking measurements and creating reports easier than ever.
Easy to Use
- Bright, high-contrast digital colour display with large numerals for easy viewing in bright or dark environments
- Measures in both Microns and Mils
- Built-in memory for up to 250 readings with on-screen statistics. View and download measurements on any computer using the included USB cable. No software required.
- Durable, all-metal housing
- Powered by a single AAA battery
Designed for Replica Tape
- Simply select the appropriate replica tape grade to automatically apply the appropriate conversion factor and subtract the 50 µm (2 mils) backing thickness
- In ‘Average mode’, the Micrometer prompts the user and averages two readings, in compliance with international standards
- A traceable Certificate of Calibration is included with each digital micrometer
Download to a PC or Mac
- Fully compatible with powerful PosiSoft Software for archiving and reporting measurement data
- USB Drive mode retrieves data in a manner similar to a flash drive in .csv format.
- No software to install or internet connection required.
Testex® Analog Dial
Testex Micrometer Dial Thickness Gauges measure the surface roughness of blast cleaned surfaces. They are the only gages specifically designed for use with replica tape having the correct accuracy, closing force, anvil/contact point dimensions, and parallelism specifications required for accurate measurement of replica tape. Includes choice of snap gauge, instruction manual, carrying case, and one (1) year warranty.
Conventional Testex Press-O-Film Tape Grades
Replica tape for measuring substrate roughness from 0.5 – 6 mils (12 – 150 µm).
Optical-Grade Testex Press-O-Film Tape
For high-resolution 2D/3D surface data when used with PosiTector RTR 3D models.
| Grade | Range (mils) | Range (µm) | Recommended Measurement Tools |
|---|---|---|---|
| Coarse Minus | 0.5 – 1.0 | 12 – 25 | Testex Digital Micrometer, Testex Analogue Micrometer, PosiTector RTR H |
| Coarse | 0.8 – 2.0 | 20 – 50 | Testex Digital Micrometer, Testex Analogue Micrometer, PosiTector RTR H |
| X-Coarse | 1.5 – 4.5 | 40 – 115 | Testex Digital Micrometer, Testex Analogue Micrometer, PosiTector RTR H |
| X-Coarse Plus | 4.0 – 6.0 | 100 – 150 | Testex Digital Micrometer, Testex Analogue Micrometer |
Legacy Testex Press-O-Film Tape Grades
Available in the traditional roll format; fully supported by current instructions and standards.
| Grade | Range (mils) | Range (µm) | Recommended Measurement Tools |
|---|---|---|---|
| Coarse | 0.8 – 2.5 | 20 – 64 | Testex Digital Micrometer, Testex Analogue Micrometer, PosiTector RTR H |
| X-Coarse | 1.5 – 4.5 | 38 – 115 | Testex Digital Micrometer, Testex Analogue Micrometer, PosiTector RTR H |
| X-Coarse Plus | 4.6 – 5.0 | 116 – 127 | Testex Digital Micrometer, Testex Analogue Micrometer |
Testex Micrometer FAQ’s
Do they require calibration?
Each micrometer arrives factory calibrated with a long-form certificate. We recommend periodic checks using the supplied reference shim.
What is the difference between digital and analogue models?
Digital units provide an easy-to-read LCD display and simple data output. Analogue models offer a traditional dial and require no batteries.
Can I use the micrometer for materials other than Testex tape?
They are specifically designed to measure replica tape impressions; using them for other materials may compromise accuracy.
How do I zero the micrometer?
Close the anvils gently on the reference shim or on a clean piece of unburnished tape and follow the instructions to set zero.
How durable are the anvils?
The anvils are hardened and precision-ground, designed for years of repeated use in harsh site environments.
Is a certificate of calibration included?
Yes, every unit ships with a long-form Certificate of Calibration traceable to PTB/NIST, meeting ISO and QA documentation requirements.
Still need help?
If you experience an issue, check our troubleshooting guide or contact our support team directly. As a DeFelsko Authorised Service Centre (DASC), DFT Instruments provides calibration, repair, and technical assistance locally in the UK.
What’s Included:
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Digital or Analogue Micrometer (model of your choice)
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Long-form Certificate of Calibration (PTB/NIST traceable)
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Hard protective carrying case
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Reference shim
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Instruction sheet
📞 To enquire about this product, contact our team today on: 01442 879494 or Complete the form.
