1. Introduction
Thank you for choosing the Nikotek Metro Laser Distance Meter NK120. This portable digital laser rangefinder is designed for precise distance measurements, offering a range of up to 120 meters with an accuracy of ±2 mm. It features an IP54 rating for dust and splash resistance, two integrated bubble levels for enhanced accuracy, and a clear 4-line LCD display. This manual provides essential information for the safe and effective use of your device.
2. Safety Information
This device uses a Class II laser with an output power of less than 1 mW. Observe the following safety precautions:
- Do not stare directly into the laser beam.
- Avoid directing the laser beam at people or animals.
- Do not disassemble or modify the device. Repairs should only be performed by authorized personnel.
- Keep the device out of reach of children.
- Use the device only for its intended purpose as described in this manual.
3. Product Overview
The Nikotek Metro Laser Distance Meter NK120 is equipped with intuitive controls and a clear display for ease of use.
3.1. Device Components

The device features a robust housing and a clear LCD display. Key buttons include:
- FUNC / Data Storage Button: Used to select measurement functions and save data.
- ON / MEAS Button: Powers on the device and initiates measurements.
- +/- Button: For addition/subtraction of measurements and navigating forward/backward in data records.
- Benchmark / Unit Switch Button: Changes the measurement reference point (front/rear) and switches measurement units (M/Ft/In/Ft+in).
- OFF / Clear Button: Powers off the device and clears current measurements.
3.2. Bubble Levels

The device includes two bubble levels to ensure accurate horizontal and vertical alignment during measurements, reducing potential errors.
4. Setup
4.1. Battery Installation
The Nikotek NK120 requires two AAA 1.5V batteries (included). To install:
- Locate the battery compartment cover on the back of the device.
- Slide or unclip the cover to open.
- Insert the two AAA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
4.2. Powering On/Off
- To Power On: Press the ON / MEAS button. The LCD display will light up.
- To Power Off: Press and hold the OFF / Clear button for a few seconds. The device will also automatically power off after 150 seconds of inactivity to conserve battery life.
5. Operating Instructions
5.1. Changing Measurement Units
Press the Benchmark / Unit Switch button repeatedly to cycle through the available measurement units: meters (M), feet (Ft), inches (In), and feet + inches (Ft+in).

5.2. Setting Measurement Benchmark
The device can measure from its front edge or its rear edge. Press and hold the Benchmark / Unit Switch button to toggle between the front and rear measurement reference points. An icon on the display will indicate the active benchmark.

5.3. Basic Measurement Functions
Press the FUNC button to select different measurement modes.

- Single Distance Measurement: Press ON / MEAS once to activate the laser, then press again to take a single measurement.
- Continuous Measurement (Tracking): Select this mode using the FUNC button. The device will continuously measure and display the distance as you move it.
- Area Measurement: Select the area mode. The device will prompt you to measure the length and width. After two measurements, it will automatically calculate and display the area.
- Volume Measurement: Select the volume mode. The device will prompt you to measure length, width, and height. After three measurements, it will automatically calculate and display the volume.
- Pythagorean Measurement (Indirect Measurement): Select the Pythagorean mode. Follow the on-screen prompts to take the necessary measurements (e.g., hypotenuse and one leg) to indirectly calculate a distance.
5.4. Addition and Subtraction
After taking a measurement, press the +/- button to enter addition or subtraction mode. Take another measurement, and the device will add or subtract it from the previous reading. Press +/- again to switch between addition and subtraction.

5.5. Data Storage and Recall
The device can store up to 99 groups of measurement data. To save a measurement, press the FUNC / Data Storage button after taking a measurement. To recall stored data, press and hold the FUNC / Data Storage button, then use the +/- buttons to navigate through the records.

6. Maintenance
6.1. Cleaning
Regular cleaning helps maintain the device's performance and longevity.
- Wipe the device with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Clean the laser lens carefully with a soft cloth, similar to cleaning camera lenses. Avoid touching the lens with fingers.
6.2. Storage
When not in use, store the device in a dry, cool place, away from direct sunlight and extreme temperatures. Remove batteries if the device will not be used for an extended period to prevent leakage.

The IP54 rating ensures protection against dust ingress and splashing water from any direction, making it suitable for various working conditions.
7. Troubleshooting
If you encounter issues with your Nikotek Metro Laser Distance Meter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Low or dead batteries; incorrect battery installation. | Replace batteries; ensure correct polarity. |
| Inaccurate measurements | Unstable measurement surface; laser beam obstructed; incorrect benchmark setting; environmental factors (e.g., strong light). | Ensure stable positioning; clear obstructions; verify benchmark; measure in suitable conditions. |
| Display shows 'Error' | Measurement out of range; laser signal too weak or too strong. | Ensure target is within range (0.05m-120m); measure on a reflective surface if needed; avoid direct sunlight. |
| Buttons unresponsive | Device frozen; low battery. | Remove and reinsert batteries; replace batteries. |
If the problem persists, please contact customer support.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | NK120 |
| Measurement Range | 0.05m - 120m |
| Measurement Accuracy | ±2 mm |
| Measurement Units | M / Ft / In / Ft+in |
| Laser Class | Class II, <1 mW |
| IP Rating | IP54 (Dustproof and Splashproof) |
| Display | 4-line LCD with backlight |
| Data Storage | 99 groups |
| Auto Power Off | 150 seconds of inactivity |
| Battery Type | 2 x AAA 1.5V batteries |
| Product Material | ABS |
| Product Weight | 180 g |
| Product Dimensions | 15.6 x 9.8 x 5.2 cm (packaging) |
9. Warranty and Support
Nikotek products are designed for reliability and performance. This product comes with a standard manufacturer's warranty against defects in materials and workmanship. Please refer to the packaging or contact customer support for specific warranty terms and duration.
Customer Support
If you have any questions, require technical assistance, or need to report an issue with your Nikotek Metro Laser Distance Meter NK120, please do not hesitate to contact our customer support team. Contact information can typically be found on the product packaging or on the official Nikotek website.