Digital Hygrometer & Thermometer

The Caliber IV hygrometer is a great tool for monitoring the humidity and temperature in the room where your instrument is kept, or inside the case with the instrument. Extremes of humidity or dryness can be dangerous to musical instruments, and knowing the humidity allows you to decide if humidification or dehumidification is necessary in your environment.

Features

• Digital temperature indicator, in Fahrenheit or Celsius
• Relative humidity indicator, accurate to +/- 1% at 70% relative humidity
• User calibratable
• High and low temperature and humidity memory
• Optional magnetic mount for attaching to a wall or the inside of a case
• Included battery

See this blog post for more information on humidity and dryness.