At less than eight inches tall and one-and-a-half inches wide, Milwaukee Instruments’ Martini EC, TDS & Temperature Meter is an accurate tester that fits anywhere! This floating, waterproof meter also displays temperature in Fahrenheit and Celsius, performs calibration and temperature compensation automatically, and its probe is replaceable. Reads EC from 0-3999 µS/cm; ±2%; TDS from 0-2000 ppm ±2%; temperature 0-60°C ±.5°C or 32.0 to 140.0°F ±1°F.