It is used under the following accasions:

A, in the case of strong sunlight or target reflection is not good, please use the reflector
B, reflecting plate has good reflection effect and measurement on the table or floor, or as a baffle.
C, it can be used in rough uneven walls and astigmatism surface (glass lens stainless steel), the reflected signal is not good or interfere with the strengthening of local signal reflection
Instant measurement of distance, area & volume with one button operation: YES
Self Calibration: YES
Wide measuring range: YES
High accuracy: ±2mm (0.079inch)
Automatic calculation of Area and Volume: YES
Indirect measurement by Pythagorean Theorem: YES
Single/Continous measurement: YES
Max/Min distance tracking (display value): YES
Easy Addition/ Subtraction of measurement: YES
Set up front / middle / rear benchmark: YES
Selectable meter(m), inch(in) and feet(ft): YES
Data store/ recall function: YES
Data Hold / Data clear function: 100 units
Air Bubble Level: YES, Included
Easy targeting with bright laser pointer: YES
Large LCD with backlight and multi-line display (4 lines): YES
Auto correction and error report technology: YES
Buzzer indication: YES
Battery status Indication: YES
IP54 protection (dust & splash proof): YES
Auto / Manual power off function: YES
Multifunction with intelligent calculation: YES
Compact & handy design: YES
CE, ROHS, FCC certificate: YES