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It depends on the calibration of the instrument you are measuring with.
calibration criteria is depend on instrument. if u r 1st criteria is for 3 month and after 3 month instrument is properly working then second time you may be extended its for 6 month..
A protractor is used for drawing and measuring angles.
an instrument that has a reference during measurement
A thermometer - body Temperature bolometer - an instrument that measures heat radiation calorimeter - a measuring instrument that determines quantities of heat
Improper calibration of the measuring instrument. If the measuring instrument is not at zero prior to measuring the object you will get a systematic error which, is a value either always higher or always lower then the actual value of the object.
It depends on the calibration of the instrument you are measuring with.
calibration of an ammeter is done in order to standardise the instrument,and rectify the errors present in the instrument, if any.
It depends on the measuring instrument that you use (including its calibration), how careful you are, how many measurements you take, whether or not you have allowed for external factors that could affect your measurement.
An absolute instrument is an instrument whose calibration can be determined by means of physical measurements.
How to find out the calculation for dry calibration of a level instrument used on the top of the tank? How to calibrate level instrument with the help of weights?
You adjust the measuring instrument :)
To know about the error, quality, performance of every instrument calibration is an essential part. A standard calibrator is required for this process to calibrate that Instrument. That calibrator is also Calibrated and standardised by National or International Standard.
By calibration in comparison to a standard one.
The Basic Calibration Process is the process through which an instrument is calibrated, or set to a scale, during its manufacturing process - and it must be able to "hold a calibration."
A pelvimeter is an instrument for measuring the pelvis.
Force meter is the instrument used in measuring force.