Salinity Meter, Digital Water Tester, Hydrometer, Ideal for Hydroponics, Aquarium Ponds, and Aquaculture. High-Precision Pen-Type Meter with Specific

No need to close one eye and place the other eye over the eyepiece. Easy to use.

No more visual estimation needed. Accurate.

No more illumination needed. Backlit.

No more manual work needed. Automatic.

No more complex calculations needed. Automatic temperature compensation, displays specific gravity and parts per thousand.