1. Introduction
The TESMEN TCG-2001 Digital Paint Thickness Gauge is a precision instrument designed for accurate measurement of coating thickness on various metal substrates. Utilizing advanced dual-tech sensing, it automatically identifies both ferrous and non-ferrous metals, providing reliable data for automotive inspections, industrial quality control, and home improvement projects. Its user-friendly design, multi-mode testing, and data logging capabilities make it an essential tool for professionals and enthusiasts alike.

Figure 1: TESMEN TCG-2001 Paint Thickness Gauge highlighting its features.
2. Setup
2.1 Battery Installation
The TCG-2001 requires 1 Lithium Polymer battery (included). To install or replace batteries:
- Locate the battery compartment cover on the back of the device.
- Slide the cover open.
- Insert the Lithium Polymer battery, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
2.2 Power On/Off
Press and hold the power button to turn the device on or off. The device features an auto power-off function to conserve battery life.
2.3 Attaching the Wrist Strap
Attach the included wrist strap to the designated loop on the device to prevent accidental drops during use.
3. Operating Instructions
3.1 Display Features
The device features a 2.0" TFT color screen with bright backlight and 4-way auto-rotation for clear readings from any direction.

Figure 2: User-friendly display features for optimal readability.
3.2 Probe and Sensing Technology
The 2-in-1 probe uses electromagnetic induction and eddy current sensing to automatically distinguish between ferrous (Fe) and non-ferrous (NFe) metals, providing precise coating thickness results on steel, zinc, and aluminum panels.

Figure 3: The smart probe and additional features for precision.
3.3 Calibration
The device supports zero-point and multi-point calibration for enhanced accuracy. It is crucial to calibrate the device regularly for optimal performance.
- Zero-Point Calibration: Place the probe on a bare, uncoated metal substrate (ferrous or non-ferrous) and follow the on-screen instructions to set the zero point.
- Multi-Point Calibration: Use the provided calibration films of known thickness. Place the probe on the film over the metal substrate and adjust the reading to match the film's thickness. Repeat for multiple points to ensure accuracy across the measurement range.

Figure 4: Calibration process using zero-point and multi-point films.
3.4 Measurement Modes
The TCG-2001 offers four distinct measurement modes:
- Single Measurement: For individual spot checks.
- Continuous Measurement: For scanning larger areas.
- Quick Check: Provides rapid assessment.
- Multi-Point Judgment: Automatically calculates average and provides pass/fail indications based on set limits.

Figure 5: Overview of the four available measurement modes.
3.5 Limit Alarm
The device features an over-limit alert icon for instant on-screen guidance, indicating when measurements fall outside predefined acceptable ranges.
4. Data Management
The TCG-2001 allows users to log and analyze measurement data directly on the device.
- Data Logging: Easily log up to 256 readings in 8 groups for organized tracking.
- Statistical Analysis: The device automatically calculates group statistics including average, minimum, maximum, and standard deviation.
- Visual Bar Graphs: Results are displayed with intuitive bar graphs for quick review and analysis.

Figure 6: Data logging and statistical display features.
5. Applications
The TESMEN TCG-2001 is versatile and suitable for various applications:
- Used Car Evaluation: Quickly check paint thickness to identify repainted areas or accident damage.
- Automotive Manufacturing: Ensure consistent coating quality during production.
- Metal Processing: Verify coating thickness on metal components.
- Home Paint Touch-Up: Achieve professional results in DIY painting projects.
- Quality Inspection: Provide reliable, precise measurements across various coating applications.
Note: This device is designed for use on metal surfaces only and is NOT compatible with non-metal substrates such as plastic, glass, fiberglass, or wood.

Figure 7: Diverse applications of the paint thickness gauge.
6. Maintenance
6.1 Cleaning
Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure the probe tip is clean and free of debris for accurate measurements.
6.2 Storage
Store the device in its protective case in a cool, dry place when not in use. Remove batteries if storing for extended periods to prevent leakage.
6.3 Charging
The device is rechargeable via USB-C. A full charge takes approximately 40 minutes.

Figure 8: USB-C fast charging capability.
7. Troubleshooting
- Inaccurate Readings: Ensure the probe tip is clean. Perform zero-point and multi-point calibration. Check if the substrate is metal and not a non-compatible material.
- Device Not Powering On: Check battery charge level. Ensure batteries are correctly installed.
- Screen Issues: If the screen is dim, check backlight settings or battery level.
For further assistance, please contact TESMEN customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | TCG-2001 |
| Brand | TESMEN |
| Item Weight | 331 g |
| Parcel Dimensions | 17.91 x 8.99 x 6.91 cm |
| Battery Type | 1 Lithium Polymer (included) |
| Color | Green |
| Display | 2.0" TFT Color Screen with Backlight, 4-Way Auto-Rotation |
| Sensing Technology | Electromagnetic Induction & Eddy Current |
| Data Storage | Up to 256 readings in 8 groups |
| Charging Port | USB-C |
| Country of Origin | China |
9. Warranty and Support
TESMEN products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the official TESMEN website or contact customer support at support@tesmen.com.