R2 Hand-Held Laser Distance Meter User's Manual

Safety Regulations

⚠ Please read the safety regulations and operation guide carefully before operating.

⚠ Please read all of the operational guide and safety regulations in this manual before operation. Improper operations without complying with this manual guided could cause damage to the device, influence on measurement result or bodily injury to the user.

⚠ The instrument is not allowed to disassemble or repair in any ways. It is forbidden to do any illegal modification or performance change for laser emitter. Please keep it out of reach of children and avoid using by any irrelevant personnel.

⚠ It is strictly prohibited to shoot eyes or other parts of body with the laser; it is not allowed take the laser to shoot any objects' surface with strong reflecting.

⚠ Due to electromagnetic radiation interference to other equipment and devices, please don't use the meter in the plane or around medical equipment, don't use it in inflammable, explosive environment.

⚠ Discarded batteries or meter device shall not processed just like household garbage, please handle them in line with related law and regulations.

Any quality issues or any questions on the meter, please contact local distributors or manufacturer in time, we are ready to offer solutions for you.

Professional casts quality and good quality gets reputation

Battery Installation / Display / Keyboard

Battery Installation and Replacement

• Discharge the battery door on the back of device, and place battery according to correct polarity, then cover the battery door.
• Only 1.5 V AAA alkaline battery is applied to the meter.
• If not used for a long time, please take out the battery to avoid battery corrosion to meter body.

Display Screen

• Laser On
• Reference Point
• Maximum
• Area, Volume and Pythagorean
• Minimum
• Major Display
• Save
• Power Supply
• Auxiliary Display
• Units

Keyboard and Operations

Keyboard Layout

• Laser On: [MEAS] button
• Area/Volume Measuring
• Addition: [+] button
• Reference Point Switch: [UNIT] button
• Off/Remove: [OFF/CLEAR] button
• Unit Switch
• Pythagorean Measuring [Pythagoras symbol]
• Subtraction: [-] button
• Backlight on/off: [Light bulb]
• Save/Read: [Save/Read]

Starting the Instrument / Menu Setting

Turn on/off the Meter

Under off status, press button [MEAS] to start the device and laser simultaneously, ready for measurement. Under on status, long press button [OFF/CLEAR] for 3 seconds to turn the device off. The device will be shut off without any operation for 150 seconds.

Unit Setting

Press button [UNIT] to reset the current measurement unit. The default unit is: 0.000m. There are 6 units for selection:

Measurement Modes

Reference Point Setting

Press [UNIT] key to select the reference point. The device reference point by default is rear.

Length Measurement & Calculation

Single Distance Measuring

Turn on the laser beam by short pressing the [MEAS] button under measuring mode. Press the [MEAS] button again for a single measurement of length. The measured results are displayed in the major display area.

Continuous Measuring

Long press the [MEAS] button under measuring mode to enter continuous measuring mode. The minimum measuring result displays in the auxiliary display area, and the present result displays in the major display area. Short press the [MEAS] button to exit continuous measuring mode.

Area Measuring

Press button [Area symbol]. One side of a rectangle blinks on the display. Follow these instructions for area measuring: Press [MEAS] once for length. Press [MEAS] again for width. The device calculates and shows the result in the major display area. The last measured result of length is shown in the auxiliary display area.

Press [OFF/CLEAR] to clear the result and measuring if necessary. Press [OFF/CLEAR] again to exit the mode.

Volume and Pythagoras Measurements

Volume Measurement

Double press button [Volume symbol]. One side of a cube blinks on the display. Follow these instructions for volume measuring: Press [MEAS] for Length. Press [MEAS] again for Width. Press [MEAS] thirdly for Height. The device calculates and shows the result in the major display area. Press [OFF/CLEAR], clear off the result and measuring again if necessary. Press [OFF/CLEAR] again to exit the mode.

Pythagoras

There are four Pythagoras modes for situations where the target is hard to reach. Press [Pythagoras symbol] for mode selection:

1. Mode 1: Calculate Second Leg

   Press [Pythagoras symbol]. The hypotenuse of the triangle blinks. Calculate the second leg by measuring the hypotenuse and another leg. Press [MEAS] to measure the length of the hypotenuse (a) according to the blinking on the screen. Press [MEAS] to measure the length of one leg (b). The device calculates the length of another leg (x).

   Diagram Description: A right-angled triangle with sides labeled 'a' (hypotenuse), 'b' (one leg), and 'x' (the other leg to be calculated).

2. Mode 2: Calculate Hypotenuse

   Press [Pythagoras symbol]. When one leg of the triangle blinks, calculate the hypotenuse by measuring the length of two legs. Press [MEAS] to measure the length of one leg (a). Press [MEAS] to measure the length of another leg (b). The device calculates the length of the hypotenuse (x).

   Diagram Description: A right-angled triangle with legs labeled 'a' and 'b', and the hypotenuse labeled 'x' to be calculated.

3. Mode 3: Calculate Leg (Full Line)

   Press [Pythagoras symbol] till the hypotenuse of the triangle blinks on the screen. Press [MEAS] to measure the length of one hypotenuse (a). Press [MEAS] to measure the length of another hypotenuse (b). Press [MEAS] to measure the length of one leg (c). The device calculates the length of the leg in full line (x).

   Diagram Description: A triangle with sides labeled 'a' and 'b' (potentially hypotenuses or reference lines), and 'c' (one leg). The calculated leg is labeled 'x'.

4. Mode 4: Calculate Leg (Full Line)

   Press [Pythagoras symbol] till one hypotenuse side of the triangle blinks on the screen. Press [MEAS] to measure the length of one side (a). Press [MEAS] to measure the length of the median line (b). Press [MEAS] to measure the length of another side (c). The device calculates the length of the leg in full line (x).

   Diagram Description: A triangle with sides labeled 'a', 'b' (median line), and 'c'. The calculated leg is labeled 'x'.

Note: Legs must be shorter than the hypotenuse, or an "err" message will show on the screen. To guarantee accuracy, please ensure all measurements start from the same point.

Addition/Subtraction and Data Management

Addition / Subtraction

The device can be used for length addition and subtraction under single distance measuring mode. Press [+], '+' shows in the major display area, entering cumulation mode. The value of the last measurement and the result of cumulation will be shown on the screen. Press [-], '-' shows in the major display area, entering regression mode. The value of the last measurement and the result of regression will be shown on the screen.

Save and Browse

The storage function can only be used under single measuring mode.

Save Measuring Results

Press [Save/Read] for 3 seconds; the result will be automatically saved to the memory stick inside of the device.

Browse Measuring Results

Press [Save/Read] to read the saved data. Press [+] or [-] to browse forward or backward. Long press [OFF/CLEAR] to remove all history records.

Tips and Self-Calibration

Troubleshooting Tips

Self-Calibration

This function can keep the precision of the device. Instruction: Power off, Long press button [UNIT] and then press [MEAS]. Release the button [MEAS] until 'CAL' and a figure under it display on the screen. User can adjust the figure with button [+] or [-] according to the accuracy of the meter. Adjusting range: -9 to 9mm. Then, long press [UNIT] button to save the calibration result.

Technology Specifications

Note: Use a target plate to increase the measurement range during daylight or if the target has poor reflection properties.

Instrument Maintenance & Delivery Package

Instrument Maintenance

• The meter should not be stored in high temperature and strong humidity environment for long time. If it is not used very often, please take out the battery and place the meter in the allocated potable bag and store in cool and dry place.
• Please keep the device surface cleaning. A wet soft cloth is applied to clean dust, but erosion liquid is never allowed to use for the meter maintenance. Laser output window and its focus lens can be maintained according to maintenance procedures for optical device.

Delivery Package

Please check if the accessories are completed according to the below list.