12-sided polygon
MEASURAND : Deviation from nominal angle between two faces of the polygon
Degrees of equivalence: Di and expanded uncertainty Ui, both expressed in milliseconds
Angle blocks
MEASURAND : Deviation from nominal angles 5", 5', 30', and 5°
Degrees of equivalence: Di and expanded uncertainty Ui, both expressed in milliseconds
12-sided polygon
MEASURAND : Deviation from nominal angle between two faces of the polygon
The tables below give the degrees of equivalence for each participant:
Results are presented under A4 printable format in Summary Results (.PDF file).
Angle blocks
MEASURAND : Deviation from nominal angles 5", 5', 30', and 5°
The tables below give the degrees of equivalence for each participant:
Results are presented under A4 printable format in Summary Results (.PDF file).
| Metrology area, Sub-field | Length, Dimensional Metrology |
| Description | Angle standards |
| Time of measurements | 2000 - 2002 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| References | |
| Measurand | Angle |
| Transfer device | 12-sided polygon and 4 angle blocks |
| Comparison type | Key Comparison |
| Consultative Committee | CCL (Consultative Committee for Length ) |
| Conducted by | CCL (Consultative Committee for Length ) |
| Comments | Results published on 15 September 2008 Angle standards |
| Pilot institute |
NMISA
National Metrology Institute of South Africa South Africa |
| Contact person | O. Kruger +27 12 841 4340 |
| Pilot laboratory | |
|---|---|
| NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
| CENAM |
Centro Nacional de Metrologia, Mexico, SIM |
| INRIM |
Istituto Nazionale di Ricerca Metrologica, Italy, EURAMET |
| KRISS |
Korea Research Institute of Standards and Science, Korea, Republic of, APMP |
| LNE |
Laboratoire national de métrologie et d'essais, France, EURAMET |
| METAS |
Federal Institute of Metrology, Switzerland, EURAMET |
| NIM |
National Institute of Metrology, China, APMP |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
| NRC |
National Research Council, Canada, SIM |
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| SMU |
Slovensky Metrologicky Ustav, Slovakia, EURAMET |
| VNIIM |
D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET |
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" :
12-sided polygon
MEASURAND : Deviation from nominal angle between two faces of the polygon
|
For each face-to-face reading, the key comparison reference value, xR, is calculated as the weighted mean of all participants' results. Its standard uncertainty, uR, is calculated as the standard deviation of the weighted mean.
|
| For each face-to-face reading, the degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms, both expressed in milliseconds: Di = (xi - xR) and its expanded uncertainty Ui = 2(ui2 - uR2)1/2. |
| The degrees of equivalence between pair of laboratories have not been computed for this key comparison. |
Angle blocks
MEASURAND : Deviation from nominal angles 5", 5', 30', and 5°
|
For each angle block, the key comparison reference value, xR, is calculated as the weighted mean of all participants' results. Its standard uncertainty, uR, is calculated as the standard deviation of the weighted mean.
|
| For each angle block, the degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms, both expressed in milliseconds: Di = (xi - xR) and its expanded uncertainty Ui = 2(ui2 - uR2)1/2. |
| The degrees of equivalence between pair of laboratories have not been computed for this key comparison. |
12-sided polygon
MEASURAND : Deviation from nominal angle between two faces of the polygon
xi : result of measurement carried out by laboratory i
ui : combined standard uncertainty of xi
* dates of measurements at the Pilot Laboratory: Jul 2000, 20 Jan 2001, 12 Dec 2001, 03 Jun 2002, and Aug 2002
Angle blocks
MEASURAND : Deviation from nominal angles 5", 5', 30', and 5°
xi : result of measurement carried out by laboratory i
ui : combined standard uncertainty of xi
* dates of measurements at the Pilot Laboratory: Jul 2000, 20 Jan 2001, 12 Dec 2001, 03 Jun 2002, and Aug 2002
