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Greater Manchester Police SmartWater warning sign
Greater Manchester Police SmartWater warning sign
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Manual calibration - US serviceman calibrating a pressure gauge. The device under test is on his left and the test standard on his right.
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
Automatic calibration - A U.S. serviceman using a 3666C auto pressure calibrator
An instrument rack with tamper-indicating seals
An instrument rack with tamper-indicating seals
An example of a weighing scale with a ½ ounce calibration error at zero. This is a "zeroing error" which is inherently indicated, and can normally be
An example of a weighing scale with a ½ 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