 |
 |
2009
No 59 |
1 kg mass prototype, No. 94 |
Japon |
2003
No 74 |
1 kg mass standard in stainless steel, No. T 4 |
NMIJ AIST, Japon |
2001
No 78 |
Helium-neon laser at 633 nm, No. 180 |
NMIJ AIST, Japon |
Notes d'étude
2005
No 15 |
Helium-neon laser at 633 nm |
NMIJ/AIST, Japon |
|
 |
|
 |