Calibration
Videos
In measurement technology and metrology, calibration is the comparison of measurement values delivered by a device under test with those of a calibration standard of known accuracy. Such a standard co
Manual calibration - US serviceman calibrating a pressure gauge. The device under test is on his left and the test standard on his right.
Automatic calibration - A U.S. serviceman using a 3666C auto pressure calibrator
An instrument rack with tamper-indicating seals
An example of a weighing scale with a 1⁄2 ounce calibration error at zero. This is a "zeroing error" which is inherently indicated, and can normally be adjusted by the user, but may be due to the string and rubber band in this case
The International Bureau of Weights and Measures is an intergovernmental organisation, through which its 67 member-states act on measurement standards in areas including chemistry, ionising radiation,
Calibration
…calibration standard is normally traceable to a national or international standard held by a metrology body. The formal definition of calibration by the International Bureau of Weights and Measures (BIPM) is the following: "Operation that, under specified conditions, in a first step, establishes a relation between the quantity values with measurement…
Pavillon de Breteuil in 2017
Replicas of historical metric standards, including an iron copy of the mètre des Archives.
Ibáñez apparatus calibrated on the metric Spanish standard and used by the Swiss Geodetic Commission at Aarberg, in canton of Bern, Switzerland in 1880.
Creating the metre-alloy in 1874 at the Conservatoire des Arts et Métiers. Present Henri Tresca, George Matthey, Saint-Claire Deville, and Debray