Double Meter Comprehensive Testing: This set includes a Acidity meter to simultaneously measure soil Acidity, conductivity (fertility), and temperature, covering three critical soil indicators 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 Auto Temperature Compensation for Stable Readings: Equipped with (Automatic Temperature Compensation), it ensures consistent measurements unaffected by soil temperature, accurate data year round 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, Manufacturer: Linvimia