Your main screen shows the time, date, and your chosen watch face.

: If measuring a translucent or highly dark surface in bright sunlight, the laser cannot bounce back reliably. Use a reflective target plate or cardboard on the target area to increase readability.

: If results seem off, you can enter "Self Calibration" mode. While powered off, hold the [UNIT] key, then press and release the [MEAS] key until "CAL" appears. Environmental Factors

: Represented by a cube or a polygon icon. Pressing this cycles between Area, Volume, and indirect Pythagorean measurements.

. Choosing the wrong one can lead to an error of several inches—the exact length of the device itself. Smith Surveying Equipment Pro Tips for Practical Use Readability Fix