actual intrument variance/ actual (or allowable) margin of discrepancy
Explanation:
If we are talking about scales or gages, the difference between the official calibration parameters and the actual measurement would be a "variance".
An allowable variance is what by law is not exactly on target but still within acceptable weight measuring limits
cal·i·bra·tion ( P ) Pronunciation Key (kl-brshn)
n.
The act or process of calibrating or the state of being calibrated.
A set of gradations that show positions or values. Often used in the plural: the calibrations on a pressure gauge.
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Source: The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2000 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
calibration
n : the act of checking or adjusting (by comparison with a standard) the accuracy of a measuring instrument; "the thermometer needed calibration" [syn: standardization, standardisation]
Main Entry: deviation
Part of Speech: noun
Definition: change
Synonyms: aberration, alteration, anomaly, breach, crotch, deflection, departure, detour, difference, digression, discrepancy, disparity, divergence, diversion, fluctuation, fork, inconsistency, irregularity, modification, shift, transgression, turning, variance, variation
Antonyms: conformance, conformity, correspondence, regularity, uniformity
Source: Roget's New Millennium™ Thesaurus, First Edition (v 1.2.1)
Copyright © 2006 by Lexico Publishing Group, LLC. All rights reserved.
Main Entry: variance
Part of Speech: noun
Definition: difference
Synonyms: about-face*, argument, change, conflict, contention, deviation, different strokes*, disaccord, disagreement, discord, discrepancy, dissension, dissent, dissidence, disunity, divergence, diversity, division, flip-flop*, fluctuation, incongruity, inconsistency, mid-course correction*, mutation, separation, severing, strife, sundering, switch, transmogrification, unharmoniousness, variation, variety
Sample phrase:
ASCLD/LAB Board Decisions on the Application of Standards and Criteria to Ongoing Inspections (PDF)
... a case record. Calibration of Instrumentation ... allowable variances from the target. value. Laboratory procedures on calibration or certification of calibration ...www.ascld-lab.org/pdf/BoardInterpretations12-31-03.pdf - 25k - View as html - More from this site - Save
| Rosanna Palermo
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Native speaker of:  Italian, English
PRO pts in category: 65
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peer agreement (net): +3