Meters and Gauges

$9.15

Test the acidity of soil. Check which plants suit your soil. Enables you to alter...

$18.80

Instantly tells you when to water your plants. Prevents over watering. Plant care booklet gives...

$18.97

Instantly tells you how acid or alkaline your soil is. Check which plants suit your...

$16.49

Forty tests: 10 each for pH, nitrogen, phosphorus, and potash. Patented color comparator system.