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Control soil acidity and moisture percentages with direct readings and decisions on when to add fertilizer and lime are simplified. This easy-to-operate meter gives on-the-spot results in 3 minutes on an easy-to-read dial with accurate pH readings from 3.5 to 8.0 and water moisture from 0% – 100%. Measures by natural electrical charge from the soil through the metal side plates on the tester. Readings are accurate to +/-.2 for acidity and +/-10% on moisture readings. No batteries required. No maintenance. Durable Instructions, Lime Guide and carrying case included. 6-1/2″ long.