Electronic Measuring Tape, Ultrasonic, Intelligently Measures Length and Volume,Sinometer JT15

A revolutionary measuring gadget! Here is a device that can calculate length at the touch of a button. This intelligent Electronic Distance Measuring Tool sends out narrow beams of ultrasonic waves that can bounce off solid objects back to the hand-held receiver. Custom electronics and a microprocessor then converts elapsed time into a distance measurement and display it on the LCD. You can get results in meters or in feet. It is fool proof and simple to use: just point at a target, press the read button , instant measurement. You can get a volume by measuring 3 sides, and get the volume on one button.
Specifications:
1. Range: 0.5m-18m ( 20 inch-59 feet)
2. Accuracy: +-1% (+-1/4 In or +-1CM)
3. Operating Frequency: 40Khz
4. Auto power off: 120 seconds
5. LCD back light : 7 seconds
6. Power: 9V Battery
7. Dimension: 149 mmX 77mm X47.5mm
8.Weight: 210g. ( Battery not included)