$16.22 Free Ship Ultrasonic 60ft Digital Distance Laser Point Meter Measurement <1mW - Wholesale US$14.65 
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A mini ultrasonic distance / area / volume measurer, could be used indoors and outdoors, and is perfect for DIY home owners and professional builders.
Specification:
Measures distance from 2 to 60 feet (0.55 to 18.288m)
Calculation of area and volume
Accuracy: Approx. 0.5% + 1 digit
Resolution: 0.01m or 1/2inch
LCD display with backlight
Foot / meter modes
Built-in guiding laser pointer
Power: 1 x 9V battery (not included)
Working frequency 40kHz ultrasonic pickup
Working temperature 32°F to 109.4°F (0℃ - 43℃)
Laser Power Output: <1mW
Water resistant
Power auto off within 30 seconds
Dimension (L x W x H): Approx. 115 x 75 x 45mm
Linear Mode
