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SIM Comparisons – 2007 Length |
Last update |
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Metrology |
Description |
Measurand |
Participants |
Status |
Report |
Length - Laser Frequencies |
Frequency of 633 nm He-Ne Lasers |
Frequency |
BIPM, CENAM, NIST, NRC |
In progress |
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Length - Dimensional metrology |
Ceramic and Steel Gauge |
Length |
CENAM |
Planned |
|
Length - Dimensional Metrology |
Long Gauge Blocks |
Length |
INMETRO, INTI, NRC |
Planned |
|
Length - Angle and Shape |
Angle Standards |
Angle |
INMETRO, NRC |
Planned |
|
Length - Dimensional Metrology |
Diameter Standards- Plugs and Rings |
Diameter |
INMETRO, NIST |
Planned |
|
Length - Dimensional Metrology |
1-D CMM Artifacts |
Length |
CENAM, NRC |
Planned |
|
Length - Dimensional Metrology |
2-D CMM Artifacts |
Length |
CENAM, NRC |
Planned |
|
Length - Surface roughness |
Surface roughness and step step height |
Roughness and |
CENAM, INMETRO, INTI, NIST, NRC |
Report in progress |
Draft A |
Length - Laser Frequencies |
633-nm laser frequency |
Frequency |
INMETRO |
Planned |
|
Length - Dimensional Metrology |
Gauge Blocks |
Length |
CEM, CENAM, INMETRO, INTI, NIST, NRC |
Report in progress |
Draft B |
Length - Dimensional Metrology |
Gauge blocks by optical intefereometry |
Length |
CENAM, NIST, NRC |
Provisional equivalence |
|
Length - Dimensional Metrology |
Gauge blocks by mechanical comparison |
Central length |
CCCM, CEM, INDECOPI, INMETRO, INTI, LCPN-CESMEC, LPMP-UTP, NIST, NRC |
Measurements completed |
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