MEASURAND : Length of gauge blocks
TRAVELLING STANDARDS : 10 steel gauge blocks
MEASURAND : Length of gauge blocks
TRAVELLING STANDARDS : 10 steel gauge blocks
Degrees of equivalence between KIM-LIPI and NMIJ
Results are presented under A4 printable format in Summary Results (.PDF file).
| Metrology area, Sub-field | Length, Dimensional Metrology |
| Description | Gauge blocks by interferometry |
| Time of measurements | 2011 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| Measurand | Central length: 0.5 mm to 100 mm |
| Transfer device | Ten steel gauge blocks |
| Comparison type | Key Comparison |
| Consultative Committee | CCL (Consultative Committee for Length ) |
| Conducted by | APMP (Asia Pacific Metrology Programme) |
| Comments |
Results published on 23 April 2013 Gauge blocks by interferometry
|
| Pilot institute |
NMIJ AIST
National Metrology Institute of Japan Japan |
| Contact person | Akiko HIRAI +81 29 861 4283 |
| Pilot laboratory | |
|---|---|
| NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
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
The aim of the data analysis is to establish the degrees of equivalence between the measurements performed by KIM-LIPI and NMIJ.
| For each nominal value, the degree of equivalence between KIM-LIPI and NMIJ is given by a pair of terms, both expressed in nm: the offset DKIM-LIPI NMIJ = xKIM-LIPI - xNMIJ, and its expanded uncertainty (k = 2) UKIM-LIPI NMIJ = 2(uKIM-LIPI2 + uNMIJ2)1/2. The ratio of these two terms is also computed and presented under graphical form. |
MEASURAND : Length of gauge blocks
TRAVELLING STANDARDS : 10 steel gauge blocks
xi : average of the central length measured in two orientations by laboratory i, expressed as the deviation from nominal value
ui : combined standard uncertainty of xi
Dates of measurements: October 2011 for KIM-LIPI and November 2011 for NMIJ
