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Test Equipment
Metrology History
Potpourri
Applied Mathematics
Metrology Acronyms
100
Since gravity varies at different places, this type of equipment should be calibrated after it is moved.
What are scales and/or balances?
100

This device, invented by Michael Faraday, is used in thousands of devices, such as robots, RC Cars and Planes toothbrushes and power plants.

What is the Electric Motor

100
This president is the only one in US history to serve more than 2 terms.
Who is Franklin D. Roosevelt?
100
This is the amount of minutes of arc in one degree.
What is 60?
100
The acronym RSS is used when calculating measurement uncertainties.
What is Root Sum Square?
200
This is the most common working standard for dimensional measurements.
What is a Gauge Block?
200
In 1642, using an inclined plane wrapped around a cylinder, astronomer William Gascoigne devised this device to measure length to fractions of a meter
What is the Micrometer?
200
Brush strokes should go in this direction when cleaning the nails during a manicure.
What is upward (up is also correct)
200
This is the binary equivalent of the decimal number 4.
What is 100?
200
The acronym RMS refers to the most common mathematical method of defining the effective voltage or current of an AC wave.
What is Root Mean Square?
300
In dimensional metrology, the height gauge is almost always used with one of these.
What is a Surface Plate?
300

This instrument originated in ancient China as early as 9 AD. The secondary scale, which contributed extra precision, was invented in 1631 by French mathematician Pierre Vernier.

What is the Vernier Caliper? (Caliper is also correct)

300
In Star Wars: A New Hope, Obi Wan Kenobi gave Luke this color lightsaber.
What is blue?
300
This is the result of rounding the negative value -10.955 to 4 significant digits.
What is -10.96?
300
The acronym THD is used to describe the amount of unwanted attributes present in a waveform. Most function generators and commercial home stereo amplifiers specify the percentage allowed.
What is Total Harmonic Distortion?
400

This is the smallest size that a normal 3 inch micrometer can measure.

What is 2 inches?

400
Donald Macadie, a British Post Office Engineer, became dissatisfied with having to carry many separate instruments required for the measurement and maintenance of telecommunications equipment, is credited for the invention of this device.
What is the Multimeter?
400
During the Civil War, these ships were the first to be made and covered in the element Fe.
What are Ironclads?
400
This type of distribution is used to model continuous variables when the variation limits are known and it is assumed that the probability between the limits is constant.
What is rectangular?
400
The acronym ILAC refers this authoritative body.
What is International Laboratory Accreditation Cooperation?
500
To use this instrument you must swing two thermometers around in the air.
What is a Sling Psychrometer?
500

Pharaoh Khufu was the first to decree this piece of granite to build these quadrahedrons

What is the Royal Egyptian Cubit? (Cubit is also correct)

500

If you were watching a WWII movie and you hear the phrase D-Day + 11, what is the date?

June 17th, 1944

500
This term defines the value that occurs most frequently in a given set of data.
What is mode?
500
The acronym CMC is referenced on an ISO/IEC 17025 scope of accreditation.
What is Calibration and Measurement Capabilities?