Solinst 122M (CSA) Mini Interface Meter, P8/LN3/25m (Laser Marked - Case Extra) - Measures Meters and Centimeters: with Markings Every mm.: Amazon.com: Industrial & Scientific
Solinst Model 122M Mini Oil/Water Interface Meters
Solinst Model 122 Interface Meter
Solinst 122M Mini Water Level Meter, Interface Meters, Well and Tank Monitoring, Mini Solinst Interface Meter, Down Hole Probes
Solinst Model 102 Water Level Meter – Pine Environmental