- NIST traceable
- Large, 10" dial
- Quartz-crystal timing
Clock has 0.01% accuracy. Thermometer range is -20° to 55°C (10° to 130°F) with ±1.5° accuracy. The hygrometer measures humidity from 0 to 100% with ±5% RH accuracy. Includes an NIST traceable certificate and one AA battery.