1. Power On

• Press and hold the Power/Mode button to turn on the device.
  
• The LCD screen will light up when it’s ready.
  

2. Select Measurement Unit

• Long press the Mode button to switch between yards (YD) and meters (M).
  
• Choose your preferred unit of measure.
  

3. Choose a Mode

Press the Mode button briefly to cycle through the 5 modes:

1. Line Distance Mode – Measures straight-line distance.
   
2. Horizontal Distance Mode – Measures horizontal distance only.
   
3. Vertical Distance Mode – Measures vertical height only.
   
4. Height Difference Mode – Calculates elevation difference between two points.
   
5. Golf Mode – Activates slope compensation and flagpole-locking features.
   

4. Use Slope Compensation (Golf Mode)

• When in Golf Mode, the rangefinder automatically adjusts distance based on uphill or downhill slopes.
  
• This gives you a true play distance instead of just raw yardage.
  

5. Lock Onto the Flag

• Aim the crosshairs at the flag.
  
• Press and hold the Power button to scan.
  
• The device will vibrate once it locks onto the flag (Flagpole Locking Function).
  

6. Read the Display

The LCD will show:

• Distance to the target (adjusted if slope mode is on).
  
• Angle of inclination (+85° to -85°).
  
• Lock confirmation (if using Flag Lock).
  

7. Adjust Your View

• Field of view: 6.5° with 6X magnification.
  
• Objective lens: 20mm, eye relief: 16mm.
  
• Hold steady for the clearest reading.
  

8. Quick Tips for Best Use

• Range acquisition takes 0.3–0.8 seconds.
  
• Keep your hand steady or use both hands for stability.
  
• Avoid aiming at reflective or moving objects for more accuracy.
  
• Works best within 5–750 yards.
  

9. Charging the Device

• Recharge using the USB Type-C cable included.
  
• A full charge ensures consistent performance on the course.
  

• Golf Rangefinder (built-in battery)
  
• Protective Carrying Case
  
• USB Type-C Charging Cable
  
• Wrist Strap/Lanyard
  
• Cleaning Cloth for Lens
  
• User Manual
  

We know you will love our RangeMaster. If you regret the purchase, just flick us a quick email at Support@rangemasterofficial.com and we will get you sorted with a refund.