1800s Wunderlich Thermometer (the thermometer is over 12 inches long) If you said 98.6°F, you are wrong... Of course you are just parroting back what you were told by your teachers, family, friends, colleagues... well pretty much everybody since 1871. That year, Dr. Carl Wunderlich at Leipzig University in Germany published a book called " On the Temperature in Diseases: A Manual of Medical Thermometry ." Dr. Wunderlich took the temperatures of over 25,000 patients under his ca…