| Metrology area, Sub-field | Length, Dimensional Metrology |
| Description | Interferometric measurement of central length of gauge blocks |
| Time of measurements | 2023 - 2027 |
| Status | Measurements in progress |
| References | |
| Measurand | Gauge-block central length up to 500 mm |
| Transfer device | 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 | EURAMET 1545 |
| Comments | Central length as per ISO 3650. Gauges are back at the pilot laboratory afte the first (EU) loop. Loop 2 (Carnet loop) was delayed due to need to replan. This started in May 2025 and will run into 2026. Comparison will now end in 2026/7. |
| Pilot institute |
NPL
National Physical Laboratory United Kingdom |
| Contact person | Andrew Lewis +44 (0) 20 8943 6074 |
| Additional |
| Pilot laboratory | |
|---|---|
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| BFKH |
Government Office of the Capital City Budapest, Hungary, EURAMET |
| BIM |
Bulgarian Institute of Metrology, Bulgaria, EURAMET |
| CEM |
Centro Español de Metrologia, Spain, EURAMET |
| DFM |
Danish Fundamental Metrology A/S, Denmark, EURAMET |
| EIM |
Hellenic Institute of Metrology, Greece, EURAMET |
| FSB-LPMD |
FSB - Laboratory for precise measurement of length, Croatia, EURAMET |
| GUM |
Glowny Urzad Miar, Central Office of Measures, Poland, EURAMET |
| IPQ |
Instituto Portugues da Qualidade, Portugal, EURAMET |
| JV |
Justervesenet, Norway, EURAMET |
| MIKES |
VTT Technical Research Centre of Finland Ltd, Centre for Metrology/Mittatekniikan keskus, Finland, EURAMET |
| MUSSD |
Department of Measurement Units, Standards and Services, Sri Lanka, APMP |
| NIMT |
National Institute of Metrology (Thailand), Thailand, APMP |
| NIS |
National Institute for Standards, Egypt, AFRIMETS |
| RISE |
Research Institutes of Sweden AB, Sweden, EURAMET |
| SE "Ukrmetrteststandard" |
State Enterprise "Ukrmetrteststandard", Ukraine, EURAMET |
| UME |
TÜBITAK Ulusal Metroloji Enstitüsü, Türkiye, 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" :
