Product name
Holykell 500m Steel Tape Deep Well Underground Water Level Indicator
Application:
depth of water in wells, boreholes, standpipes, and tanks
Level range:
0-500m optional (customized level range)
Signal :
LED, buzzer, electricity meter
Power supply:
9v lithium battery
Material:
ABS metal optional
Standard lengths:
30,50,100,150,300,400,500m