Four-Way Soil Analyzer
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All you need to do to take measurements with
this analog meter is to insert it in the soil and
move the switch to the factor you want to test.
It will measure the amount of fertilizer (too
little, ideal, too much), light (0–10), moisture
(1–4), and pH (0–9.0). It doesn’t even require
batteries. Size: 4 3/8L x 2 1/2W x 1 1/4D.