It has a 3.5" stem which can be inserted through a 5/32" hole to permit reading of temperature form outside of the incubator. The 2" dial permits easy accurate reading. It is graduated in one degree points from 25 to 125 degrees.Can also be used as a hygrometer to measure wet bulb readings. Includes wick and instructions to convert wet bulb readings to relative humidity.
- 4.50 x 2.25 x 2.25 inches