Lincoln always had one of these in the White House.
A device used for viewing Microscopic things.
A sign usually used to warn you of dangerous Chemicals.
A Weight measuring device with a Digital Read-out.
Something usually containing a Saline (Salt Water) solution.
A picture of someone’s Humerus, Ulna and Radius.
This is a Sphygmomanometer, used to measure Blood Pressure.
A symbol used to represent Infinity.
A Caduceus, a medical symbol based on the God Hermes' staff.
In 1714, Fahrenheit invented the 1st Mercury version of these.
The longest one of these ever made was over 36 feet long.