Press once to clear the last entry; hold for 3 seconds to shut the device off manually. The unit will auto-power off after approximately 150 seconds of inactivity to save battery.
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. foneso f100 user manual work
The is a high-precision digital tool designed for measuring distances up to 328 feet (100 meters) with accuracy within ±2plus or minus 2 Press once to clear the last entry; hold
Beyond simple distance, the F100 calculates area, volume, and indirect heights: the F100 calculates area