Gift Essentials Galileo Thermometer 17 inches (44 cm)
- Easy-to-read green, yellow, and red tick marks for easy monitoring.
- 5-inch stainless steel stem penetrates soil and worm compost to the perfect depth..
- Worms are happiest between 55F and 90F. This thermometer lets you know when to cool them off or to move them to a warmer place.