“GLOBAL WATER” (Made in USA) Portable Sonic Water Level Meter Model WL-650 Portable well level sounder and depth measuring meter which uses ultrasonic waves to measure well water level quickly & accurately in the field or anywhere.

Normal Measuring Range : 10 to 500 Feet 

Deep Measuring Range: 200 to 1200 Feet

Measurement Accuracy: + 0.2% of reading exclusive of temperature setting errors

Operating Temperature: – 1 to 50 Deg. C

Power: 8 x AA Dry Cells Battery 

Sonic Measuring duct diameter: 5/8 inch the hole diameter must be at least large enough for 1/2 inch pipe thread 

Sonic measuring duct length : 2 in (5 cm)