Some indoor thermometers are capable of reading temperatures as low as -50 degrees Fahrenheit and as high as 145 degrees Fahrenheit. These thermometers are also able to take accurate readings.
Looking to keep an eye on the temperature ... his own high-temperature thermometer using a type-K thermocouple. The end result is a no-nonsense handheld unit with a surprisingly low part count ...
The thermometer developed by QuantumCTek ... “The Origin SL400 accommodates 336 extremely low-temperature, special high-frequency coaxial cables, whereas the Origin SL1000 can house 840 cables ...