Kelway Soil Acidity and Moisture Meter

Test soil in three minutes! 
This tester is designed so that by the action of the electricity it generates it will give an accurate pH reading of the soil on the outside scale of the dial, and will show moisture content of the soil on the inner scale. 
 
The electrical energy to move the indicator is due to a potential difference between two electrodes which act to show pH value.
These electrodes are constructed of special metal plates and alloys which activate each other and in turn set up an intricate electrical process generating energy that activates the indicator. Has no batteries to run down or replace. 
Easy to use, just push tester vertically into soil to a depth at least covering the metal plates. 
 
Read the pH on the upper scale (3.5, 4, 5, 6, 7, and 8 pH values). Once pH reading is taken, push moisture button on side to obtain the moisture reading (0, 50, 70, 100% moisture). Only 6-1/2 in. long, weighs 8 oz. 
 
Includes carrying case with belt loop and complete instructions.