FREE Shipping on orders over $150 (Weight Restrictions Apply)
The NexPTG PRO Carbon is NexDiag's flagship paint coating thickness gauge, built for automotive professionals who need both accuracy and speed. It measures steel, galvanised steel and aluminium panels across an extended 0–3000 micron range through a spherical probe suited to flat and curved bodywork, and stores up to 8000 readings before you need to sync. Beyond the core measurement hardware, the PRO Carbon adds features no other NexPTG model has: a VIN scanner, voice-controlled operation, smartwatch pairing, and access to over 100 personalised vehicle bodies for client-ready reports.
0–2500µm · 4000 readings · core features
0–3000µm · 8000 readings · VIN reader, voice control
Same as this model, plus accredited calibration certificate
Covers thin factory paint through to thick filler or multi-layer refinish work, with 1 micron resolution for genuinely precise readings.
Scan a vehicle's VIN with your phone's camera to auto-populate basic vehicle information in the report, speeding up every inspection.
Record a measurement, start a new report, take a photo or open the gallery entirely by voice, useful when your hands are already full.
The only NexPTG model that connects to a Wear OS or WatchOS smartwatch app, so you can take and check readings without pulling out your phone.
| Spec | Detail |
|---|---|
| Measurement range | 0–3000 µm (0–118.11 mils) |
| Measurement resolution | 1 µm (0.04 mils) |
| Probe type | Movable, spherical tip, profiled housing |
| Curve measurement | Yes |
| Substrate recognition | Steel, galvanised steel, aluminium |
| Zinc detection | Up to 1000 µm |
| Coating analysis system (PAS) | Extended ver. 2 |
| Measurement memory | Up to 8000 readings |
| Measurements per second | 10 |
| Communication | Bluetooth 4.0 LE |
| VIN code reader | Yes |
| Voice control | Yes |
| Smartwatch app | Yes (Wear OS / WatchOS) |
| Report bodies | 100+ individual, personalised vehicle bodies |
| Report generation & export | Yes, via NexPTG app (email export) |
| Battery life | Up to 100 hours continuous, 2x AA |
| Operating temperature | -20°C to +40°C |
| Housing colour | Carbon |
| Weight | 58g (without batteries) |
| Size | 112 x 50 x 28 mm |
| App compatibility | Android 5.0+ (Bluetooth LE), iOS 11+ / iPhone 6s or later |
| Warranty | 36 months |
No calibration certificate included. This model has identical hardware to the certified version, just without the third-party accredited paperwork. If you need documented, defensible accuracy for insurance work, appraisals or formal condition reports, see the PRO Carbon with Calibration Certificate instead.
Not sure this is the right model? See the full NexPTG comparison and buying guide to check it against the rest of the range.
I'm Nick, founder of Detailing Shed. Over the years I've used paint thickness gauges on a lot of vehicles, and it's changed how I approach every correction job.
I've picked up resprayed panels that looked completely normal to the eye. No colour mismatch, no overspray, nothing you'd catch just walking around the car. The gauge told a different story. I've also come across vehicles with real variation in paint thickness from panel to panel, the kind of pattern that usually points to repair work at some point, even when there's no paperwork or visible sign of it.
A few times I've had a reading come back a lot lower than expected on a panel. That's not a good moment. It means there isn't enough paint or clear coat left to safely do the level of correction the customer originally asked for. Without the gauge, I wouldn't have known that until it was too late, and cutting through clear coat isn't something you can undo.
Having that number in front of me before I pick up a machine means I'm making an informed call, not a guess. It takes the risk off the customer's paint, and off my reputation. That's really what a paint thickness gauge does: it removes the guesswork. You know exactly what you're working with before you touch the paint, not after.
You can't safely remove paint if you don't know how much of it you've actually got. Finding a repair, filler, a respray, or paint that's thinner than it should be before you start polishing can save real time, real money, and in some cases stop you doing damage to a car's paint that can't be undone.
If you're serious about paint correction, a paint thickness gauge should be considered essential equipment, not an optional accessory.
Nick, Founder, Detailing Shed
It measures the exact depth of paint, primer and clear coat on a vehicle's panels, in microns. Detailers use it to check for filler or respray work before quoting a correction, track how much clear coat is being removed during machine polishing, and establish a safe baseline before PPF or ceramic coating application.
Identical hardware and specifications. The certified version simply includes an official calibration certificate from an external, accredited certification company, confirming the unit meets NexDiag's stated accuracy parameters. It matters for anyone producing paint reports for insurers, appraisers or used-car buyers who need certified, defensible measurements.
PRO Carbon extends the measurement range to 3000 microns (versus 2500) and memory to 8000 readings (versus 4000), and adds the VIN reader, voice control, smartwatch pairing and 100+ personalised report bodies that the Professional doesn't have. It also carries a 36-month warranty rather than 24.
Yes. It automatically recognises and measures steel, galvanised steel and aluminium substrates.
The gauge has no onboard display; readings are sent via Bluetooth to the free NexPTG app on iOS or Android, where measurements, reports and vehicle data are recorded and exported. It also pairs with a compatible smartwatch for hands-free measuring.
Yes. Factory paint typically reads within a consistent, narrow range, so a noticeably thicker or inconsistent reading across a panel usually indicates filler, respray or replacement work.
Please allow extra time for delivery to regional and remote areas.
Free Shipping on orders over $150 excluding remote areas and certain weight restrictions apply for free shipping in each state. Trade accounts $250 minimum for free shipping.
The following qualifies for free shipping:
For orders with free shipping, we determine whether to use a courier service or Australia Post based on the address. If you prefer your order to be shipped via Australia Post, please select the "Parcel Post" option at checkout.
Note: We do not ship to PO Boxes or Parcel Lockers with free shipping.
If your parcel is returned to us, the following conditions outline when additional shipping costs may apply:
*We will not be held responsible for delays or late delivery of Australia Post or courier services.
*If a parcel does not arrive as anticipated, please allow 5-7 working days for Australia Post or couriers to complete process of tracking and locating as in most cases it turns up after 3-7 days of expected delivery. We cannot refund or send another item until this process is completed.
*We don't take responsibility for orders that are lost or stolen once the parcel has been delivered to the correct delivery address.
*Items that are over 21kg may require to pay extra freight costs if in regional or remote areas - we will contact you if this is the case.
All of our prices are in Australian dollars (AUD) and include GST (Goods and services tax)
At The Detailing Shed, we’re committed to supplying premium-grade car care products. Due to the nature of many of our items, particularly chemicals, our return policy has recently been updated. Please review the following carefully before submitting a return or refund request.
Due to safety and quality control, we do not accept returns on the following items:
Unused and unopened accessories such as brushes, pads, and towels may be eligible for return, pending approval by our customer service team. Email us at info@detailingshed.com.au with your order number and photos of the item(s) to request approval.
Yes, we accept exchanges. If you ordered the incorrect product and need to get something else, send it back under the returns policy and make a separate purchase for the new item.
You may cancel your order if it hasn't yet been processed or shipped. Please note that a 3% transaction fee will be deducted from your refund. The remaining amount will be returned to your original payment method.
Once your order has been processed or dispatched, cancellations are no longer possible. However, you can still return the items in line with our Returns Policy.
If you receive a damaged or incorrect item, please notify us within 10 days of delivery. Send an email to info@detailingshed.com.au with your order number and clear photos of the issue. We’ll work quickly to arrange a replacement or refund if stock is unavailable.
If you're returning an item valued over $50, we recommend using a trackable shipping service or purchasing shipping insurance. We are not responsible for returned items that are lost in transit.
If an item hasn’t arrived, please allow 7–15 business days after Australia Post or the courier begins their investigation. We’ll notify you once your case is resolved and any refund or replacement is processed.
Please note: Product packaging or colours may vary from online images due to manufacturer updates. Refunds will not be issued for these variations unless the product is faulty or incorrect.
Discount codes must be applied at checkout and cannot be added to an existing order. We are unable to apply discount codes or refund the difference once an order is processed. Please ensure any promotional codes are entered correctly before completing your purchase. If you experience any issues applying a code, feel free to contact us before finalising your order.
We're here to help
If you need to contact us for advice on any of the products, please email us at info@detailingshed.com.au
Please include description of the product you are interested. Some info of you car, and also what you are trying to achieve.
We may also review our blogsfor product recommendations.
