Double Meter Comprehensive Testing: This set includes a Acidity meter to simultaneously measure soil Acidity, conductivity ( fertility), and temperature, covering three critical soil indicators Long Probe for Soil Analysis: Features a 138mm stainless steel probe for direct insertion into deeper soil layers, avoiding surfaces inconsistencies and providing more representative data Auto Temperature Compensation for Stable Readings: Equipped with ( Automatic Temperature Compensation), it ensures consistent measurements unaffected by soil temperature, accurate data year round Wide Ranges Precisions Measurement: The Acidity meter catering to crop cultivation needs with high accuracy Calibration & Easy Maintenance: Supports or multi point calibration modes, comes pre calibrated, and allows effortless recalibration to maintain long term precisions, Manufacturer: Oxxggkao