Introduction
Thank you for purchasing the FOSSiBOT C1000F Golf Laser Rangefinder. This device is designed to provide accurate distance measurements for golf and various outdoor activities. Please read this manual thoroughly before use to ensure proper operation and to maximize the product's lifespan. Keep this manual for future reference.
Product Features
- 3-Point Distance Measurement Mode: Allows measurement of distances from a remote location (e.g., golf cart) to the ball and then to the pin. This assists in club selection, supports companions, and helps with blind holes by measuring straight-line distances when both ball and pin are visible.
- Compact and Lightweight Design: Ultra-compact, similar in size to a credit card, weighing only 141 grams. Ergonomically designed for comfortable one-handed use and easy portability in a pocket or attached to a waist clip.
- High-Performance Display: Features a high-transmittance LCD black display viewfinder with 6.5x magnification and 85% light transmittance. Provides clear information even in bright sunlight and allows brightness adjustment for various lighting conditions. A focus adjustment ring enables easy adaptation to individual eyesight.
- Rapid and Accurate Measurement: Achieves measurement speeds as fast as 0.04 seconds over a wide range of 3 to 1000 meters (1093 yards). Equipped with a high-precision chip for reliable distance readings.
- Five Measurement Modes:
- Pin Lock Mode: Prioritizes and measures the distance to the nearest target when multiple objects overlap.
- Slope Mode: Accurately calculates the adjusted distance to hit, considering terrain elevation differences for uphill and downhill shots.
- Straight Line Distance Measurement Mode: Continuously measures the direct linear distance to a target, regardless of complex terrain.
- Speed Measurement Mode: Continuously measures the speed of moving targets or balls by holding down the power button.
- Horizontal/Vertical Distance Measurement Mode: Measures both horizontal distance and vertical height of a target continuously.
- Economical USB Rechargeable Battery: Built-in 650mAh battery eliminates the need for frequent battery replacement. A single full charge allows up to 20,000 measurements. Features an automatic power-off function after approximately 10 seconds of inactivity to conserve battery life.
- IP54 Dustproof and Waterproof: Designed to withstand dust and splashes, allowing for reliable use even in light rain.
- Magnetic Attachment: Integrated powerful magnet allows easy attachment to magnetic waist clips, golf carts, or caddy bags.
Package Contents
The FOSSiBOT C1000F Golf Laser Rangefinder package includes the following items:
- FOSSiBOT C1000F Golf Laser Rangefinder
- Dedicated Carrying Case
- USB Charging Cable
- Lanyard
- Cleaning Cloth
- User Manual

Product Overview
Familiarize yourself with the different parts of your FOSSiBOT C1000F Golf Laser Rangefinder.

- Focus Adjustment Ring: Rotate to adjust focus for clear viewing.
- Power/Measurement Button: Press to power on and initiate measurement.
- MODE Button: Press to cycle through different measurement modes.
- Laser Receiving Lens: Receives the reflected laser beam.
- Laser Emitting Lens: Emits the laser beam for distance measurement.
- USB Charging Port: For charging the internal battery.
- 6.5x Monocular Eyepiece/Finder: For viewing targets.
Setup
1. Charging the Battery
Before first use, fully charge the device. Connect the provided USB charging cable to the USB charging port (6) on the rangefinder and to a standard USB power adapter (not included). The charging indicator will show the charging status. A full charge allows for approximately 20,000 measurements.
2. Attaching the Lanyard
Attach the included lanyard to the designated loop on the rangefinder to prevent accidental drops during use.
3. Adjusting Focus
Look through the eyepiece (7) and rotate the focus adjustment ring (1) until the view is clear and sharp for your eyesight.
Operating Instructions
Basic Measurement Steps

- Power On: Press the Power/Measurement button (2) located on the front of the device. The display will activate inside the viewfinder.
- Select Mode: Press the MODE button (3) repeatedly to cycle through the available measurement modes until you reach your desired mode.
- Aim at Target: Look through the viewfinder and align the target mark (crosshairs) precisely with your desired target.
- Measure Distance: Press the Power/Measurement button (2) again to initiate the distance measurement. The measured distance will be displayed instantly.
Measurement Modes
The FOSSiBOT C1000F offers five distinct measurement modes:

1. 3-Point Distance Measurement Mode
This mode allows you to measure two distances from a remote point (e.g., your golf cart) to an intermediate target (e.g., your ball) and then from that intermediate target to the final target (e.g., the pin). This is useful for strategic play and assisting others.

2. Pin Lock Mode
When multiple objects are in the line of sight, this mode intelligently identifies and locks onto the nearest target, typically the flagstick. The device will vibrate to confirm the pin lock, ensuring you get the correct distance to the pin.

3. Slope Mode
This mode measures the actual distance to the target and then calculates an adjusted distance, taking into account the elevation difference (slope) between your position and the target. This provides a more accurate