Golf Rangefinders: How They Work

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Golf rangefinders work by using either laser technology or GPS (Global Positioning System) to measure distances on a golf course. Here’s how each type functions:

Laser Rangefinders

  1. Emitting a Laser Beam – The device sends a laser beam toward the target, typically a flagstick or a hazard.
  2. Measuring the Time Delay – The beam reflects off the target and returns to the rangefinder.
  3. Calculating Distance – The device calculates the time it took for the laser to travel to the target and back, then converts it into distance.
  4. Display Results – The distance is shown on a screen, often with slope adjustments (if available) to account for elevation changes.

🔹 Pros: Highly accurate, works anywhere.
🔹 Cons: Requires a clear line of sight to the target, can be affected by shaky hands.

GPS Rangefinders

  1. Satellite Connection – The device connects to GPS satellites to determine your location on the golf course.
  2. Preloaded Course Maps – It cross-references your location with preloaded golf course data.
  3. Displaying Distances – The device shows the distances to the front, center, and back of the green, as well as hazards and other course features.

🔹 Pros: Quick, no need to aim at a target, works in low visibility.
🔹 Cons: Requires preloaded course maps, may not be as precise as a laser rangefinder for pin distances.

Which One is Best?

  • Laser Rangefinder → Best for pinpoint accuracy when aiming at the flagstick.
  • GPS Rangefinder → Best for a quick overview of the course layout and distances.
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