MEASURAND : Length of gauge blocks
TRAVELLING STANDARDS : 10 steel gauge blocks with nominal length, L, from 0.5 mm to 100 mm
Degrees of equivalence, Di and expanded uncertainty Ui, of each laboratory i with respect to the reference value for each gauge block, expressed in nm
L = 0.5 mm
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L = 1.01 mm
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L = 1.1 mm
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L = 6 mm
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L = 7 mm
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L = 8 mm
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L = 15 mm
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L = 80 mm
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L = 90 mm
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L = 100 mm
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MEASURAND : Length of gauge blocks
TRAVELLING STANDARDS : 10 tungsten carbide gauge blocks with nominal length, L, from 0.5 mm to 100 mm
Degrees of equivalence, Di and expanded uncertainty Ui, of each laboratory i with respect to the reference value for each gauge block expressed in nm.
L = 0.5 mm
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L = 1 mm
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L = 1.01 mm
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L = 1.1 mm
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L = 5 mm
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L = 6 mm
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L = 8 mm
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L = 80 mm
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L = 90 mm
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L = 100 mm
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MEASURAND : Length of gauge blocks
TRAVELLING STANDARDS : 10 steel gauge blocks
Degrees of equivalence, Di and expanded uncertainty Ui, for each nominal length.
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MEASURAND : Length of gauge blocks
TRAVELLING STANDARDS : 10 tungsten carbide gauge blocks
Degrees of equivalence, Di and expanded uncertainty Ui, for each nominal length.
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| Metrology area, Sub-field | Length, Dimensional Metrology |
| Description | Gauge blocks by interferometry |
| Time of measurements | 1999 - 2000 |
| Status | Approved for equivalence |
| Measurand | Central length: 0.5 mm to 100 mm |
| Transfer device | Steel and tungsten carbide gauge blocks |
| Comparison type | Key Comparison |
| Consultative Committee | CCL (Consultative Committee for Length ) |
| Conducted by | EURAMET (European Association of National Metrology Institutes) |
| RMO Internal Identifier | EUROMET Project No 471 |
| Comments | The central length of gauge blocks is measured by interferometry according to ISO 3650. Results published on 13 June 2005 Gauge blocks by interferometry |
| Pilot institute |
LNE
Laboratoire national de métrologie et d'essais France |
| Contact person | G.-P. VAILLEAU +33 (0) 1 40 43 37 77 |
| Pilot laboratory | |
|---|---|
| LNE |
Laboratoire national de métrologie et d'essais, France, EURAMET |
| BEV |
Bundesamt für Eich- und Vermessungswesen, Austria, EURAMET |
| CEM |
Centro Español de Metrologia, Spain, EURAMET |
| CMI |
Czech Metrology Institute, Czechia, EURAMET |
| DFM |
Danish Fundamental Metrology A/S, Denmark, EURAMET |
| IPQ |
Instituto Portugues da Qualidade, Portugal, EURAMET |
| JV |
Justervesenet, Norway, EURAMET |
| METAS |
Federal Institute of Metrology, Switzerland, EURAMET |
| MIKES |
VTT Technical Research Centre of Finland Ltd, Centre for Metrology/Mittatekniikan keskus, Finland, EURAMET |
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| SMD |
Service de la Métrologie Belge, Belgium, EURAMET |
| SMU |
Slovensky Metrologicky Ustav, Slovakia, EURAMET |
This page proposes print-out on A4 paper (portrait) of the comparison details (best printed out using a black and white printer).
Please, select items to be printed out, then click on "OK" :
MEASURAND : Length of gauge blocks
TRAVELLING STANDARDS : 10 steel gauge blocks
|
For each nominal value, the reference value, xR, is obtained as the arithmetic mean of the participant results taking into acount the estimated drift of the travelling gauge block (see page 50 of the Final Report). The standard uncertainty, uR, of the reference value is computed according to equation A7 given on page 51 of the Final Report. |
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| The degree of equivalence of each laboratory i with respect to the reference value is given by a pair of terms: Di = xi - xR, and Ui, its expanded uncertainty given by equation A11 of the Final Report. |
| The pair-wise degrees of equivalence are not calculated. |
Key comparison EUROMET.L-K1 is parallel to key comparison CCL-K1.
Numerical linking of these comparisons is not recommended due to artefact dependent offsets. Instead, laboratories participating competently in both key comparisons establish the link and assure equivalence.
MEASURAND : Length of gauge blocks
TRAVELLING STANDARDS : 10 tungsten carbide gauge blocks
|
For each nominal value, the reference value, xR, is obtained as the arithmetic mean of the participant results taking into acount the estimated drift of the travelling gauge block (see page 50 of the Final Report). The standard uncertainty, uR, of the reference value is computed according to equation A7 given on page 51 of the Final Report. |
.gif)
| The degree of equivalence of each laboratory i with respect to the reference value is given by a pair of terms: Di = xi - xR, and Ui, its expanded uncertainty given by equation A11 of the Final Report. |
| The pair-wise degrees of equivalence are not calculated. |
Key comparison EUROMET.L-K1 is parallel to key comparison CCL-K1.
Numerical linking of these comparisons is not recommended due to artefact dependent offsets. Instead, laboratories participating competently in both key comparisons establish the link and assure equivalence.
MEASURAND : Length of gauge blocks
TRAVELLING STANDARDS : 10 steel gauge blocks
xi : deviation from nominal length after drift correction, measured by laboratory i (see sections 8 and 9 of the Final Report)
ui : combined standard uncertainty of xi
2.gif)
2.gif)
* For these gauge blocks, uncertainty components were increased because of bad wringing conditions
dates.gif)
MEASURAND : Length of gauge blocks
TRAVELLING STANDARDS : 10 tungsten carbide gauge blocks
xi : deviation from nominal length after drift correction, measured by laboratory i (see sections 8 and 9 of the Final report)
ui : combined standard uncertainty of xi
1.gif)
2.gif)
*For these gauge blocks, uncertainty components were increased because of bad wringing conditions
dates.gif)
