Masons Pattern Hygrometer –  Overview

Housed in a yellow plastic case with lid and bulb protection. Only available in Red Spirit. Supplied with Hygrometric tables, spare wick and instructions. Sold as single units.

Masons Pattern Hygrometer – Features

• Requires no electricity
  • no flat batteries
  • no Atex issues.
• Reading of  Wet and Dry bulb Temperature
• Use Hygrometric table to get Relative Humidity