The gadget is essentially half the size of your standard pair of binoculars. It really is the perfect size to slip into your travelling pocket for easy access, and is made of a lightweight polycarbonate material. This means no more frantically digging through your bag, or weighing down your neck with heavy binoculars.
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Biochemist Florence Barbara Seibert (1897-1991) developed the skin test for tuberculosis. After graduating from Goucher College, she worked as a chemist during World War I and then went to Yale University, where she earned a Ph.D. and made important discoveries about the ability of some bacteria to survive distillation techniques and therefore contaminate intravenous injections. During the 1930s, she taught at University of Pennsylvania and developed the tuberculosis skin reaction test,