BD923 Big Digit ThermometerBD923 Our Big Digit Thermometer has 3 in. high numbers on a super large 5. 5 X 9. 5 in. screen. Built into a rugged aluminum housing, the large illuminated red numbers are very bright and can be seen from great distances easily visible from 50 to 75 feet. This thermometer comes with an attached immersion waterproof probe that has a long 18ft cord with a probe tip length of 1 in. Accuracy is + 2 Degrees. Can be custom calibrated for higher accuracy