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CMCs General Physics (5)
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Dimensional metrology (5)
Flatness standards (5)
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United Kingdom (5)
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Your query 'United Kingdom' produced 5 results New search

 
United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Length for United Kingdom (.PDF file)
Flatness standards. Optical flat: flatness, 0 µm to 18.99 µm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: 20
Phase-stepping Fizeau interferometer, automatic assessment
Diameter: 100 mm to 150 mm
Orientation: vertical
Approved on 17 July 2014
Internal NMI service identifier: 35a
 
Flatness standards. Optical flat: flatness, 0 µm to 18.99 µm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: 17
Phase-stepping Fizeau interferometer, automatic assessment
Diameter: 33 mm to 100 mm
Orientation: vertical
Approved on 17 July 2014
Internal NMI service identifier: 35b
 
Flatness standards. Optical flat: flatness, 0 µm to 18.99 µm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: 14
Phase-stepping Fizeau interferometer, automatic assessment
Diameter: 3 mm to 33 mm
Orientation: vertical
Approved on 17 July 2014
Internal NMI service identifier: 35c
 
Flatness standards. Optical flat: flatness, 0 µm to 16.29 µm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: 27
Fizeau interferometer, visual assessment
Diameter: 100 mm to 300 mm
Orientation: horizontal
Internal NMI service identifier: 36
 
Flatness standards. Optical flat: flatness, 0 µm to 16.29 µm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: 12
Fizeau interferometer, automatic assessment
Diameter: 100 mm to 300 mm
Orientation: horizontal
Internal NMI service identifier: 37