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PosiTector® Replica Tape Readers

Article No. 14422

Positector RTR Tape Reader, Std

  • PosiTector RTR H Standard Gauge
  • Storage of 1,000 readings per probe - stored readings can be viewed or downloaded
  • Measures peak height (HL)
  • Automatically subtracts the 50.8 µm (2 mils) incompressible film from all readings
  • Minimizes inspector workload by reducing the number of replicas needed to ensure accuracy

Select your model

$750.00 excl. taxes & shipping cost


The PosiTector Replica Tape Reader gages measure and record surface profile parameters using replica tape. For use with Testex™ Press-O-Film™ Replica Tape - Digital spring micrometer measures and records peak to valley surface profile height using replica tape.

  • Larger 2.8" impact resistant color touchscreen with redesigned keypad for quick menu navigation
  • RESET feature instantly restores factory settings
  • Weatherpoof, dustproof, and water-resistant, IP65-rated enclosure
  • Rugged indoor/outdoor instrument, ideal for field or laboratory use
  • Shock-absorbing, protective rubber holster for added impact resistance
  • Two year warranty on gage body AND probe
  • On-gage help explains menu items at the touch of a button
  • PosiTector body accepts all PosiTector 6000, 200, RTR, SPG, DPM, IRT, SST, UTG, SHD, BHI, and GLS probes easily converting from a coating thickness gage to a surface profile gage, dew point meter, soluble salt tester, ultrasonic wall thickness gage, hardness tester, or gloss meter
  • Mils/Microns switchable
  • Selectable display languages
  • Screen Capture, save 100 screen images for record keeping and review
  • Every stored measurement is date and time stamped
  • Up to 30% longer battery life
  • Auto rotating display with Flip Lock
  • USB port for fast, simple connection to a PC and to supply continuous power. USB cable included
  • PosiSoft USB Drive - stored readings and graphs can be accessed using universal PC/Mac web browsers or file explorers. No software required.
  • Conforms to national and international standards including ISO and ASTM
  • Ergonomic design with durable rubberized grip
  • Instant-on feature quickly powers up the gage if recently powered down
  • Certificate of Calibration (containing Ra and Rt measurements) showing traceability to an accredited national laboratory included (Model RTR3D)
  • Certificate of Calibration showing traceability to PTB included (Long Form) (Model RTR H)
  • Minimizes inspector workload by reducing the number of replicas needed to ensure accuracy
  • Additional Advanced Model Features Only
    • Live graphing of measurement data
    • Touchscreen keyboard for quickly renaming batches, adding notes, and more
    • Integrate with third-party software, drones, ROVs, PLCs, and robotic devices using several industry-standard communication protocols

Technical Attributes

  • Data
    Range:20-115 µm (0.8 - 4.5 mils)
    Accuracy:±5 µm (±0.2 mils)
    Resolution:1 µm (0.1 mil)
    Measuring Range:(H)20 - 115 µm / 0.8 - 4.5 mils
    (Rt)10 - 115 µm / 0.4 - 4.5 mils
    Minimum Roughness (Ra):2 µm / 0.08 mil
    Accuracy:(H)+5 µm / +0.2 mil
    (Rt)*+(5 µm + 5%) / +(0.2 mil+ 5%)
    (Ra)*+(0.25 µm + 5%) / +(0.01 mil + 5%)
    Anvil Pressure:1.1 Newtons / 110 grams-force
    Anvil Size:Ø6.25 mm / Ø0.25 inch
    Field of View:3.8 x 3.8 mm / 0.149 x 0.149 inch
    Lateral Sampling:3.7 µm 0.145 mil
    Vertical Resolution:100 nm - 2D/3D
    10 nm - SDF
    3.93 µin - 2D/3D
    0.393 µin - SDF
    Resolution:0.1 µm 0.01 mil

    2D Parameters - 'R' - Profile Parameters:
    Ra Roughness Average
    Rq Root mean square roughness
    Rp Maximum Profile Peak Height
    Rv Maximum Profile Valley Depth
    Rt Total Profile Height
    Rz Average Maximum Height of the Profile
    Rpc Peak Count per unit length

    3D Parameters - 'S' - Height/Amplitude:
    H Average maximum peak-to-valley height
    Sa Average roughness
    Sq Root mean square roughness
    Sz Maximum area peak-to-valley height
    Sp Maximum area peak height
    Sv Maximum valley depth
    Spd Areal peak density
    * When measured using Optical Grade X-Coarse Replica Tape

More Information

Linearized Peak Height

Two grades of Testex™ Press-O-Film™ replica tape, “Coarse” and "X-Coarse", are available to span the primary range of surface profiles for the coatings and linings industry –– 20 to 115 µm / 0.8 to 4.5 mils.

An unfortunate characteristic of replica tape is that conventional spring micrometer measurements are most accurate near the middle of each grade's range and least accurate at the outer ends of each grade's range. That is why two other grades, Coarse Minus (< 20 µm / 0.8 mils) and X-Coarse Plus (> 115 µm / 4.5 mils), are used to check and, if necessary, adjust measurements at the upper and lower ends of the primary range.

Inside the primary range, Coarse and X-Coarse tape share a 38 - 64 μm (1.5 - 2.5 mils) "overlap" region. Measurements with conventional micrometers require a complicated and time consuming procedure of averaging one reading using Coarse grade and one reading using X-Coarse grade to achieve reasonable accuracy.

With a single measurement, the PosiTector RTR H produces a more accurate peak-to-valley height measurement HL from Coarse or X-Coarse tapes that has been adjusted for their non-linearity. There is no need to average two or more replicas from different grades of tape AND there is no need to subtract the 50.8 μm / 2 mils of incompressible polyester film. The advantages are a reduction in measurement uncertainty, inspector workload, likelihood of error, and the number of replicas needed by inspectors to assure accuracy.

The PosiTector RTR H can also display a height value (H) that is comparable to what conventional analog spring micrometers would display after the 50.8 μm / 2 mils of incompressible polyester film has been subtracted.


ASTM D 4417, ISO 8503-5, NACE RP287, SSPC-PA 17, SSPC-SP5, SP6, SP10, SP11-87T and others

ASME B46, ASTM D4417, ISO 8503-5, NACE SP287, SSPC-PA 17, SSPC-SP5, SP6, SP10, SP11-87T and others



  • Preparation of both the surface to be tested and the PosiTector RTR H are necessary before performing the test.
  • To prepare surface: Use cleaning putty to remove dust, debris, or residual blast media from the measurement site by firmly pressing the putty onto surface to be tested using your fingers and remove
  • To prepare the PosiTector:
  • Clean anvils using included cleaning card. Swipe card through opening a few times while firmly pressing both probe buttons to remove dust
  • Zero probe and verify accuracy with included shim
  • Ensure correct grade of replica tape is displayed in upper left hand corner of LCD



  • Testex Press-O-Film™ replica tape consists of a layer of compressible foam affixed to an incompressible polyester film of highly uniform thickness. When pressed against a surface, the foam forms an impression, or reverse replica, of the surface.
  • RTR H
    • Select appropriate grade of replica tape based on target profile
    • Pull a single adhesive-backed replica tape free of its release paper and apply to blasted surface
    • Firmly compress replica film using the rounded end of the included stainless steel burnishing tool. Apply sufficient pressure in a circular and x-y rubbing motion for 30-60 seconds to fully compress all parts of the film. In general, too much compression is safer than too little.
    • When complete, remove replica tape from surface
  • RTR3D
    • For best results when acquiring 2D/3D parameters and images from the PosiTector RTR 3D, it is recommended to use the supplied burnishing ball instead of the stainless-steel burnishing tool.
    • Adhere the replica tape to the surface to be burnished.
    • Holding the ball in two hands using your index fingers and thumbs, place the ball on the replica tape.
    • Gently roll the ball over the tape while viewing the burnished tape through the clear ball. Adjust the force applied to the ball until a replica of the surface begins to appear on the tape.
    • Continue to roll the ball until the tape is completely burnished (at least 30 seconds). measure with PosiTector RTR3



  • Insert the burnished replica tape into the measurement opening. Ensure the tape is properly positioned so that the burnished region is centered within the opening in the probe with the adhesive (sticky) side down.
  • To position the tape, move the Testex Press-O-Film‚ replica tape to the back of the probe and align the two dots (printed on replica tape) with arrows on both sides of the measurement opening.
  • Once positioned, firmly press both probe buttons simultaneously and hold until the PosiTector beeps and the measurement is displayed.
  • The gage automatically subtracts the thickness of the polyester substrate from all measurements. (RTR H)
  • RTR3D - After placing the compressed tape (replica) into the PosiTector RTR 3D a light-intensity versus thickness algorithm is used to produce a three dimensional (3D) image of the replicated surface.
  •  RTR H - Placing the compressed tape (replica) into the PosiTector RTR H gives a measure of the average maximum peak-to-valley height of the surface roughness profile.

Delivery Content

Stainless steel burnishing tool, cleaning card (5), check shim, surface cleaning putty, protective rubber holster with belt clip, wrist strap, 3 AAA alkaline batteries, instructions, nylon carrying case with shoulder strap, protective lens shield, Long Form Certificate of Calibration traceable to NIST, USB cable, two (2) year warranty. Replica Tape sold separately.

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