SG SURGOAL 120m Green Laser Rangefinder User Manual

1. Introduction

Thank you for choosing the SG SURGOAL PG-120 Green Laser Rangefinder. This device is a versatile and accurate tool designed for efficient and precise distance measurements up to 120 meters. It features a bright green laser, a digital level, multiple measurement modes, USB charging, and data storage capabilities. Please read this manual carefully before using the device to ensure safe and optimal operation.

2. Safety Information

WARNING: LASER RADIATION - DO NOT STARE INTO BEAM.

This device emits a Class 2 laser (500-690nm, <1mW). Direct exposure to the laser beam can cause eye injury. Always follow these safety guidelines:

Do not stare directly into the laser beam.
Do not point the laser at people or animals.
Avoid pointing the laser at highly reflective surfaces.
Keep the device out of reach of children.
Do not attempt to disassemble or modify the device.
Use only as described in this manual.

Back view of the SG SURGOAL PG-120 laser rangefinder showing caution labels and CE certification. — Figure 1: Back of the device with laser safety and certification labels.

3. Package Contents

Upon opening your package, please ensure all the following items are included:

SG SURGOAL Laser Distance Meter (PG-120) x1
Box x1
User Manual x1
Charging Cable x1
Hand Strap x1
Portable Bag x1

Contents of the SG SURGOAL PG-120 package, including the laser distance meter, box, manual, charging cable, hand strap, and portable bag. — Figure 2: All items included in the product package.

4. Product Overview

The SG SURGOAL PG-120 is a compact and robust laser distance meter designed for ease of use and accuracy. Its soft rubber-wrapped design provides a comfortable grip and protects the instrument.

Front view of the SG SURGOAL PG-120 laser rangefinder, showing the display with measurement readings and the control buttons. — Figure 3: Front view of the SG SURGOAL PG-120 Laser Rangefinder.

Side view of the SG SURGOAL PG-120 laser rangefinder, highlighting the laser emitter and receiver. — Figure 4: Side view showing the laser emitter.

Close-up of the laser rangefinder showing its soft rubber-wrapped design for comfortable grip and protection. — Figure 5: Soft rubber-wrapped design for comfortable grip and protection.

5. Specifications

Feature	Specification
Measuring Range	0.05m ~ 120m
Measurement Accuracy (Standard Deviation)	±2.0mm
Laser Type	500~690nm (Green Laser)
Laser Grade	Class 2, <1mW
Single Measurement Time	0.5s
Power Type	Rechargeable (Li-On battery included)
Full Charge Measurable Times	>20000 times
Historical Data Record	30 Groups
Automatic Laser Off	After 30 seconds of no operation
Automatic Instrument Shutdown	After 120 seconds of no operation
Distance Units	ft, in, m
Area Units	ft², in², m²
Volume Units	ft³, in³, m³
Working Temperature	-10°C ~ +40°C
Storage Temperature	-20°C ~ +65°C
Certification	CE

6. Setup

6.1 Charging the Battery

The device is powered by a built-in rechargeable Li-On battery. Before first use, or when the battery indicator shows low power, charge the device using the provided USB charging cable.

Locate the USB charging port on the side of the device (usually protected by a rubber flap).
Open the rubber flap and insert the small end of the USB cable into the device's port.
Connect the other end of the USB cable to a standard USB power adapter (not included) or a computer's USB port.
The battery indicator on the display will show charging status. Once fully charged, disconnect the cable and close the rubber flap to protect the port.

Close-up image showing the USB charging port on the laser rangefinder with a charging cable inserted. — Figure 6: USB charging port and process.

6.2 Attaching the Hand Strap

Attach the hand strap to the designated loop on the device to prevent accidental drops during use.

7. Operating Instructions

7.1 Power On/Off

Power On: Press the power button (usually marked 'C' or a red star) to turn on the device. The laser will activate.
Power Off: Press and hold the power button to turn off the device. It will also automatically shut down after 120 seconds of inactivity. The laser will turn off after 30 seconds of inactivity.

7.2 Unit Conversion

Press the 'UNIT' button to cycle through available distance units: meters (m), feet (ft), and inches (in). Area and volume units will adjust accordingly.

7.3 Measurement Datum Switching

The device allows switching between two measurement reference points: front and back. This means measurements can be taken from the front edge of the device or the back edge. Switch the reference according to your actual measurement needs.

7.4 Measurement Modes

The PG-120 offers nine different measurement modes. Press the mode button (often depicted with multiple squares or a house icon) to cycle through them.

Diagram illustrating the nine measurement modes: Single Measurement, Continuous Measurement, Area Measurement, Volume Measurement, Wall Area Measurement, Pythagorean-1, Pythagorean-2, Pythagorean-3, and Addition/Subtraction. — Figure 7: Overview of the nine measurement modes.

7.4.1 Single Measurement

Measures the direct distance from the device to a target. Point the laser at the target and press the measurement button (usually the red star or power button) once. The distance will be displayed.

Diagram showing Single Measurement, Continuous Measurement, Area Measurement, and Volume Measurement modes. — Figure 8: Single, Continuous, Area, and Volume Measurement diagrams.

7.4.2 Continuous Measurement (Tracking)

Allows for dynamic measurement as you move the device. The display will continuously update with the current distance, often showing maximum and minimum values. Press the measurement button to start and again to stop.

7.4.3 Area Measurement

To calculate the area of a rectangular space:

Select Area Measurement mode.
Measure the length (a).
Measure the width (b).
The device will automatically calculate and display the area (a x b).

7.4.4 Volume Measurement

To calculate the volume of a rectangular space:

Select Volume Measurement mode.
Measure the length (a).
Measure the width (b).
Measure the height (c).
The device will automatically calculate and display the volume (a x b x c).

7.4.5 Wall Area Measurement

This mode is useful for calculating the total area of multiple walls. Measure the height once, then measure the length of each wall. The device sums the lengths and multiplies by the height.

Diagram showing Wall Area Measurement, Pythagorean-1, Pythagorean-2, and Pythagorean-3 measurement modes. — Figure 9: Wall Area and Pythagorean Measurement diagrams.

7.4.6 Pythagorean Measurement (1, 2, 3)

These modes use the Pythagorean theorem to calculate indirect measurements (e.g., height or distance) when direct measurement is not possible. Follow the on-screen prompts to take the required measurements (hypotenuse, base, etc.).

7.4.7 Addition/Subtraction Measurement

Allows you to add or subtract measurements. Take a measurement, then press the '+' or '-' button, take another measurement, and the device will perform the calculation.

7.5 Data Storage

The device can store up to 30 groups of historical data. Use the data storage button (often depicted as a floppy disk icon) to save measurements and review them later. The stored data can be viewed at any time, and data from different measurement points can be compared for easy analysis and review.

Image showing the laser rangefinder display with multiple stored measurements, highlighting the 30-set data storage feature. — Figure 10: Data storage feature on the display.

8. Maintenance

Keep the device clean and dry. Wipe with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
Protect the laser lens from scratches and dirt.
Store the device in its portable bag when not in use.
Avoid extreme temperatures and direct sunlight.
Regularly charge the battery to maintain its lifespan, even if not used frequently.

9. Troubleshooting

Device not turning on: Ensure the battery is charged. If fully charged, try resetting by holding the power button for an extended period.
Inaccurate measurements: Check if the measurement datum is correctly set (front or back). Ensure the target surface is reflective enough and the laser beam is not obstructed. Clean the laser lens if dirty.
Error code displayed: Refer to the device's display for specific error code prompts. Common issues include out-of-range measurements or environmental interference.
Laser not visible: The green laser is designed to be easier to see in bright light than red lasers, but extreme sunlight can still make it difficult to see. Try shading the target area or using the device in lower light conditions.

Image explaining the green beam laser, stating it's 'Easier to see in bright light than the Red laser,' with a diagram of wavelengths and an outdoor laser effect example. — Figure 11: Green laser visibility in various conditions.

10. User Tips

For best accuracy, ensure the device is stable and level during measurement.
When measuring long distances outdoors, use a target plate to improve laser visibility and measurement accuracy.
Utilize the continuous measurement mode for quickly finding minimum or maximum distances, such as when aligning objects or checking clearances.
Regularly review stored data to track progress on projects or verify previous measurements.

Video 1: Product demonstration showcasing the features and usage of the SG SURGOAL PG-120 Laser Distance Meter.

Image showing various application scenarios for the laser rangefinder, such as measuring stairs, window heights, room dimensions, and hallways. — Figure 12: Examples of various application scenarios for the laser rangefinder.

11. Warranty and Support

For warranty information and technical support, please refer to the contact details provided by your retailer or visit the official SG SURGOAL website. Keep your purchase receipt as proof of purchase.

SG SURGOAL PG-120