1, 30CM PROBE, ALLOWS ACCURATE MEASUREMENT. 2, MOISTURE: 1-8(10%-80%) 3, PH ACCURACY: +/- 0.3pH Soil PH & Moisture Meter, WITH 30cm ... Crop is very important.FEATURES: 1, Measures moisture, pH. 2, With 30 cm long stem. It can get deeper into soil ... .5 X 300 mm Weight: 115gPICTURES: Soil PH & Moisture Meter, WITH 30cm PROBE