Laser rangefinder distance meter Słowik FNIRSI for length, area, volume, Pythagoras, units ft/in/m, black

Handheld laser rangefinder Słowik FNIRSI is a compact distance meter designed for quick length, area and volume measurements. The device supports Pythagoras calculations and displays results in metres, feet and inches. Encased in a black housing measuring 33 × 78 × 17 mm, this portable tool is suitable for on-site use in construction, interior planning, real estate inspections and DIY projects. The FNIRSI IR40 model uses laser technology to provide fast, repeatable measurements and continuously updates area calculations as distance changes.

Advantages

The meter offers a wide measurement range from 0.05 to 40 m and uses a Class 2 laser for reliable targeting. A built-in gyroscope automatically flips the display based on device orientation for easier reading. The device is rechargeable via the included USB-C cable and houses a 400 mAh battery that provides up to 3000 measurements per charge. Bluetooth connectivity and a dedicated RangeFinder app allow transfer and storage of measurements to a computer or mobile phone for further processing.

Suitable for

• Interior design and space planning
• Construction and renovation site measurements
• Real estate inspections and property surveys
• DIY projects and home improvements

Key specifications

• Measurement range: 0.05–40 m
• Measurement functions: length, area, volume, Pythagoras
• Units: metres, feet, inches
• Laser: Class 2
• Battery: rechargeable 400 mAh (USB-C charging)
• Estimated measurements per charge: up to 3000
• Connectivity: Bluetooth (compatible with RangeFinder app)
• Orientation sensor: built-in gyroscope (screen flip)
• Housing colour and dimensions: black; 33 × 78 × 17 mm

How to use

Point the laser at the target surface and press the measurement button to record distance; the device will display the measured length immediately in the selected unit (m, ft, in). For area and volume measurements, perform sequential length measurements as instructed by the device and the calculation will be presented automatically. Use the Pythagoras function when direct line-of-sight measurement is obstructed: take the required reference measurements and let the meter compute the final distance. Pair the device with the RangeFinder app over Bluetooth to download and store measurement data on a phone or computer.

Usage recommendations

For best accuracy keep the laser perpendicular to the target surface and avoid reflective surfaces; when measuring long distances ensure stable positioning and follow local laser safety guidelines for Class 2 devices. Recharge the battery using the supplied USB-C cable and update stored measurements regularly via the RangeFinder app.