Useful for measuring heights of walls from a distance. Measure the hypotenuse (the distance to the top of the object) and then the horizontal base. The device uses the Pythagorean theorem to calculate the vertical height. Essential Maintenance & Troubleshooting
Long press to cycle between measuring units (meters, inches, feet).
For additional support or to request a larger print PDF of the manual, users are encouraged to visit the official Foneso support page or contact their retailer directly. User Manual - Smith Surveying Equipment foneso f100 user manual work
The F100 can typically store up to 20 historical data points , allowing you to scroll through recent measurements for later reference. Technical Specifications Measuring Range 0.03m to 100m (328ft) Laser Class Class II, Accuracy ±2plus or minus 2 Battery Life >15,000 measurements
For better accuracy in bright sunlight or on poorly reflective surfaces, use a target reflector . Avoid using the laser on transparent surfaces like glass or colorless liquids, as this can cause errors. Useful for measuring heights of walls from a distance
Use these buttons for adding or subtracting consecutive measurements. Advanced Measurement Modes
Press the function button until the rectangle icon appears. Measure the length and then the width; the device will automatically calculate the total square footage. Essential Maintenance & Troubleshooting Long press to cycle
The F100 uses AAA batteries . If you plan to store the device for more than a month, remove the batteries to prevent corrosion.
Press once to turn the device on or to activate the laser. Press again to take a measurement.
mm. This guide provides a comprehensive walkthrough for operating your device efficiently.