duimetrology.com

Purpose: To explore the differences between a measurement instrument that has a linear relationship between the thing measured and the result v. a measuring instrument that has a calibration curve. To search for an admission that the calibration curve can shift up or down, left or right, or rotate around a point over time. To cross-examine the CFS expert on the lack of empirical study supporting the ATC/CFS hypothesis that a single point control test can always detect drift.

Purpose: To distinguish R. v. Jackson on the basis of a difference in facts. The instrument in Jackson was new. See Jackson paragraph 135 highlight in red. The instrument in the matter before the Court was about 6 years old. #aging #Jackson #calibrationinterval

Purpose: To suggest that ATC/CFS scientists cannot provide any scientific opinion of the reliability of aging instruments out in the field without conducting an empirical study of instruments sampled from the field. To suggest that ATC/CFS scientists have no idea whether or not instruments in the field are performing in accordance with manufacturer's specifications. To identify the lack of any system of "verification" in Canada that instruments in the field are performing in