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About
AUTOOL designs and builds professional automotive testing and maintenance equipment in Shenzhen.
About AUTOOL
Meet AUTOOL at AAPEX & SEMA 2026TG501Thickness Gauge
AUTOOL TG501 delivers fast, non-destructive paint thickness checks on steel & aluminum—perfect for car paint thickness test
- Working Principle
- High-Precision Measurement
- Wide Compatibility
- Easy to Operate
- Excellent Stability
- Measurement range
- 0-2,000μm
- Substrate recognition range
- 3-500μm
TG501 at a glance
- Measurement range
- 0-2,000μm
- Substrate recognition range
- 3-500μm
Overview
TG501 Thickness Gauge
The AUTOOL TG501 portable car thickness gauge is designed for measuring the thickness of coatings and platings on metal surfaces, such as paint/enamel/chrome on steel and paint/anodized coatings on aluminum or copper. Featuring dual technology, it can automatically identify both ferrous and non-ferrous substrates, making it ideal for non-destructive measurement of paint thickness on automotive surfaces.
Working Principle
AUTOOL TG501 car paint thickness tester is a magnetic coating thickness gauge that uses the principle of magnetic induction to determine the coating thickness by measuring the change in magnetic flux. When the probe comes into contact with the coating, a closed magnetic circuit is formed between the probe and the magnetic substrate. The presence of a non-magnetic coating changes the reluctance of the magnetic circuit (the greater the reluctance, the smaller the magnetic flux). The thicker the coating, the greater the reluctance and the smaller the magnetic flux. By measuring the change in magnetic flux, the instrument can calculate the thickness of the coating.
AUTOOL TG501 Car Paint Tester Features
High-Precision Measurement: Accurately measures coating thickness on various material surfaces, meeting the needs of industries such as automotive repair, shipbuilding, aerospace, and more.
Wide Compatibility: Supports multiple measurement modes and functions, including measuring non-conductive coatings on non-magnetic metal substrates (such as aluminum, copper, and zinc alloys), as well as non-magnetic coatings on magnetic metal substrates (such as iron and steel).
Easy to Operate: Features an intuitive user interface and straightforward operation, allowing users to quickly get started and perform efficient measurements.
Excellent Stability: Offers strong stability and repeatability, ensuring accurate measurement results under various environmental conditions.
High Portability: Designed as a handheld device, it is compact and lightweight, making it easy for users to carry and operate anywhere.
Three-year Warranty: For damages caused by non-human factors, AUTOOL promises to provide free replacement parts within three years. If you have any requests, please feel free to contact us, and we will respond promptly within 24 hours.
AUTOOL TG501 Thickness Gauge Operating Instructions
Clean the Surface: Remove dust, oil, and other impurities from the surface to ensure it is clean and smooth.
Calibrate the Device: Place the probe on an uncoated substrate and press the calibration button to complete zero-point calibration.
Measure Coating Thickness: Place the probe vertically on the test surface and press the measurement button to read the value. Perform multiple measurements and take the average to improve accuracy.
Specifications
Technical data
TG501
- Measurement principle
- Fe (Magnetic Induction), NFe (Eddy Current Effect)
- Measurement range
- 0-2,000μm
- Resolution
- 0.1μm (0-100μm), 1μm (>100μm)
- Accuracy
- ±(3%+1μm)
- Units
- μm, mm, mil
- Calibration
- Zero Calibration
- Substrate recognition range
- 3-500μm
- Substrate minimum curvature radius
- Convex 5mm, Concave 25mm
- Minimum measurement area
- Diameter 15mm
- Minimum substrate thickness
- Fe: 0.30mm, NFe: 0.05mm
- Maximum measurement speed
- 2 readings per second
- Power supply
- 3*AAA 1.5V batteries
- Operating environment
- Temperature: -10°C~50°C, Humidity: 20%RH~90%RH
- Protection level
- IP40
- Housing material
- ABS
Videos
See the TG501 in action
Play video: AUTOOL TG501 | Thickness GaugeAUTOOL TG501 | Thickness Gauge
Support
Manuals & downloads
User manual
AUTOOL-TG501-MANUAL.pdf
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