Question: are mercury free thermometers accurate?
Answer: Scale Divisions and Accuracy Limits For thermometers that have a high range of 260° C, accuracy below 100° C is ± 1°-2° C for both mercury and non-mercury thermometers. Above 100° C mercury thermometers have an accuracy range of ± 1.5° C, while non-mercury have an accuracy limit of ± 3° C.