Waterproof Conductivity Meter (Pen Style) stocked Zen port MP24 Machete 24

Zen port MP24 Machete 24 inch Carbon Steel Blade PVC Handle w/Sheath

Low Noise Output: The fan operates silently

then this is the product you should choose

Standard Fit: This versatile system also conveniently accepts standard 10" duct

Waterproof Conductivity Meter (Pen Style) stocked Zen port MP24 Machete 24Highly stable and accurate readings with a large LCD display. Designed for simple one hand operation. Simultaneously displays the parameter being measured and temperature in C or F. Features automatic temperature compensation, 2 pt. calibration, auto power off, hold function, and a low battery indicator. The case is IP65 waterproof, and will float if accidentally dropped into the water. Comes with 4 button cell batteries and a built in probe with