2 in 1 laser and tape measurement: Measuring 40M/60M laser with a 5M tape measure makes it extremely convenient to meet your different measurement needs. Press the read button to switch the laser for indoor and outdoor activities. Press the UNIT button for 2 seconds to switch the measurement unit as needed. M / In / Ft
High-precision self-calibration: Self-calibration with accuracy of ±2mm. Press the READ button and the UNIT button for 2 seconds at the same time, then release READ 1s and display "CAL" on the LCD display to enter the self-calibration mode. Support pre-reference and end reference self-calibration of -9~9mm distance to provide more accurate data.
Continuous measurement mode: In the operation mode, press and hold the READ button to enter the continuous measurement mode. When moving the measurement object, the distance will change continuously, then press the READ button again to maintain the desired distance data. Continuous measurement up to 40M and 60M.
Better Add - Press the READ button to turn on the HD LCD screen. The backlight will go out when there is no operation for 20 seconds. The laser will turn off automatically after 150 seconds of standby. Press READ and UNIT to turn off the device at the same time. The battery can be used continuously for 8000 times. Make the tape measure easy to carry anywhere; low battery; provide a free screwdriver to replace the battery.
Note: 2xAAA battery (not included)