Tech-Med* Digital Thermometer Dual Scale, Quick 10 Second Read with easy to read large LCD display and low Battery Indication, Reads both Centigrade and Fahrenheit; Range: 32 degree c- 43.9 deg C, 90 - 109.9 degree F, Alarm/Beeper when reading is complete.
Marina Standing Thermometer - Celsius and Fahrenheit, designed to sink to the bottom of the aquarium and remain in a vertical position, Centigrade, Has a safety zone temperature range indicator for most tropical fi