Ms. McManus bid $200 on an antique instrument that measures humidity, called a hygrometer.
Dosimeter, instrument that measures exposure to ionizing radiation over a given period.
In 1929 German scientist Hans Berger developed an electroencephalograph, an instrument that measures and records these brain-wave patterns.
Altimeter, instrument that measures the altitude of the land surface or any object such as an airplane.
G.E.'s reactors have an opening at the bottom for an instrument that measures the neutron density.
Accelerometer, instrument that measures the rate at which the velocity of an object is changing (i.e., its acceleration).
Researchers had 700 children spend a night in a sleep lab where they were evaluated using a polysomnograph, an instrument that measures sleep quality and breathing function.
An instrument that measures thermal emissions has identified in the dark pebbly surface an iron oxide that on Earth typically forms in the presence of water.
"We've moved away from an instrument that measures and improves student growth, and gotten wound up in the concept of how much data we can collect".
Voltmeter, instrument that measures voltages of either direct or alternating electric current on a scale usually graduated in volts, millivolts (0.001 volt), or kilovolts (1,000 volts).
The TTCI is a 26-item multiple choice instrument that measures students' understanding of phylogenetic trees.
