Bond® 3 Way Soil Meter by Sunlight Supply $9.95 $6.48 SKU: Bond 3 Way Soil Meter (12/Cs) - $6.48 Bond 3 Way Soil Meter (12/Cs) Type Quantity Add to cart Measures moisture content of soil. Lets you know to water. Helps you determine if plant is getting adequate light. Helps you control pH level in soil. No batteries needed. For indoor or outdoor use.