# Accuracy of 100% Visual Inspection - Proofs

#### CarolX

##### Super Moderator
Super Moderator
Find the Fs

Hello all,

I found a couple to the "F" test used to prove the uselessness of 100% inspection. Marc was so kind as to post them on the pdf site. You can find them as:

F test - long.doc and F test - short.doc

Regards,
CarolX

#### Marc

##### Hunkered Down for the Duration
Staff member
Quickly count the number of 'F's in the following text:

FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS

There are six

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Quickly count the number of 'F's in the following text:

The necessity of training farm hands for first class farms in the fatherly handling of farm livestock is foremost in the minds of farm owners. Since the forefathers of the farm owners trained the farm hands for first class farms in the fatherly handling of farm livestock, the farm owners feel they should carry on with the family tradition of training farm hands of first class farms in the fatherly handling of farm livestock because they believe it is the basis of good fundamental farm management.

There are 36

#### Marc

##### Hunkered Down for the Duration
Staff member
Anyone have any other examples?

D Long length measurement of 18" up to 100" with an accuracy of .005 min General Measurement Device and Calibration Topics 8
M What does an accuracy figure expressed as 3+2.L/100 microns mean? General Measurement Device and Calibration Topics 6
L Generic Accuracy of a 100 foot Tape Rule General Measurement Device and Calibration Topics 10
SAT (System Accuracy Test) temperature according to AMS2750E AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 1
IEC 60601-2-10 - Accuracy of Pulse Parameters - Required Measurement Uncertainty IEC 60601 - Medical Electrical Equipment Safety Standards Series 3
Analog Pressure Gauge with no EN837 accuracy class information General Measurement Device and Calibration Topics 5
IEC 60601-1 Essential Performance - Is the signal accuracy specification an essential requirement? IEC 60601 - Medical Electrical Equipment Safety Standards Series 4
Warning about Deltronic Gage Pins - The "Certification of Accuracy" document General Measurement Device and Calibration Topics 13
Posting Measuring Equipment Accuracy for User Information General Measurement Device and Calibration Topics 4
Gagemaker MT-3000 accuracy for calibration Calibration and Metrology Software and Hardware 2
CMM Accuracy Formula General Measurement Device and Calibration Topics 3
Calibration Accuracy In Relation To Reporting General Measurement Device and Calibration Topics 1
Acceptable calibration accuracy of a 60" linear measuring device General Measurement Device and Calibration Topics 16
Calibration certificates avowing accuracy beyond the uncertainty limits? Measurement Uncertainty (MU) 7
Jewelry vs. Normal Laboratory Balances - Accuracy and calibration General Measurement Device and Calibration Topics 2
Tape Measure, the right device for 2 or 3 decimals accuracy on prints General Measurement Device and Calibration Topics 8
Equipment for Oven Calibration, Uniformity and System Accuracy Tests AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 6
Opinions on the "Best" CMM for High Accuracy Machining General Measurement Device and Calibration Topics 9
AMS 2750E System Accuracy Test (SAT) Frequency AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 3
A Process to Validate the Accuracy of Test Reports (AS9100) AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 38
D AMS 2750E - Digital Instrument Calibration Accuracy Requirements General Measurement Device and Calibration Topics 1
Soldering Station Accuracy out of specification 21 CFR Part 820 - US FDA Quality System Regulations (QSR) 3
Help trying to explain accuracy procedure General Measurement Device and Calibration Topics 1
Cry for help - FDA calibration requirement for accuracy & precision General Measurement Device and Calibration Topics 2
C Accuracy Equation - Linear gage with a stated accuracy of (1.5+L/50) ?m L= mm General Measurement Device and Calibration Topics 5
W Dimensional Measurement of 10% accuracy and 25% uncertainty standard General Measurement Device and Calibration Topics 6
UUT Accuracy as part of Uncertainty Budget Measurement Uncertainty (MU) 6
A Uncertainty Measurement - What this accuracy specification "1% + 10^5": means? General Measurement Device and Calibration Topics 2
L Inspection Equipment Accuracy - Measuring the diameters of small holes Measurement Uncertainty (MU) 5
E How does Non-Linear UUT affect TAR (Test Accuracy Ratio) Calculation? Measurement Uncertainty (MU) 3
G Digital Autoclave Accuracy Requirements ISO 13485:2016 - Medical Device Quality Management Systems 2
S AMS 2750E Heat Treat Furnace System Accuracy Test SAT Report question AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 2
A Accuracy for electrosurgical analyzer General Measurement Device and Calibration Topics 2
A Calculating Accuracy for a Multimeter General Measurement Device and Calibration Topics 1
Verification of weighing scale 150kg capacity 0.05g accuracy General Measurement Device and Calibration Topics 9
A Accuracy Calculation of Leakage Current for an Electrical Safety Analyzer General Measurement Device and Calibration Topics 5
Laser Precision Linear Measurement - Inherrent Accuracy of 10 -6 - Nice PDF Paper General Measurement Device and Calibration Topics 1
S Stated Accuracy of Portable CMM Arm and Real World Use Inspection, Prints (Drawings), Testing, Sampling and Related Topics 9
A Intrinsic Uncertainty and Accuracy of a Medical Electrical Safety Analyzer General Measurement Device and Calibration Topics 1
V CMM plane construction method types and accuracy differences for measuring Pos Tol Inspection, Prints (Drawings), Testing, Sampling and Related Topics 4
J Weighing Balance Accuracy for Plastic Moulded Parts variation study Manufacturing and Related Processes 3
Best X-Y Microscope Stage for Submicron Accuracy Capability, Accuracy and Stability - Processes, Machines, etc. 2
K Wilson Hardness Tester Model 525 Accuracy/Repeatability issues help General Measurement Device and Calibration Topics 4
Measurement Uncertainty and Equipment Accuracy Measurement Uncertainty (MU) 2
C Basic Internal Calibration Procedure to check the Accuracy of a Balance Calibration Frequency (Interval) 6
C Accuracy Problem on the Calibrator - Two Labs with different Results General Measurement Device and Calibration Topics 7
R How do I extend Correction factor of Calibration cert to compute instrument accuracy Measurement Uncertainty (MU) 1
P Measurement Equipment - 10:1, 4:1 - Is it resolution or accuracy General Measurement Device and Calibration Topics 1
Accuracy of a Measurement Device Inspection, Prints (Drawings), Testing, Sampling and Related Topics 4
C Simpson 260 Series 8 Equipment Accuracy General Measurement Device and Calibration Topics 5