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CMCs General Physics (7)
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Dimensional metrology (7)
Line standards (7)
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EURAMET (7)
United Kingdom (7)
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Your query 'United Kingdom' produced 7 results New search

 
United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Length for United Kingdom (.PDF file)
Line standards. Linear scale: line spacing L, 0.01 mm to 400 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: Q[0.159 + 0.00182L], L in mm
Interferometer
Revised on 05 May 2017
Internal NMI service identifier: 20
 
Line standards. Grid plate (XY standard): grid point coordinates, 50 mm to 120 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: 0.1
2-D comparator + interferometer
Internal NMI service identifier: 22
 
Line standards. 1-D grating: pitch, P, 0.29 Ám to 50 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[0.025, 0.19P, 0.024P 2], P in Ám, values range from 0.06 to 61
Laser diffractometer
Measurement area: 3 mm2
Internal NMI service identifier: 23
 
Line standards. 2-D grating: pitch, P, 0.29 Ám to 50 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[0.025, 0.19P, 0.024P 2], P in Ám, values range from 0.06 to 61
Laser diffractometer
Measurement area: 3 mm2
Internal NMI service identifier: 24
 
Line standards. Photomask: linewidth L, 0.3 Ám to 200 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: (0.03 + 0.001L), L in Ám
Optical microscope + interferometer
Internal NMI service identifier: 25
 
Line standards. Image analyser graticule (circular spots): diameter, 3 Ám to 48 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: 0.15
Image analysis using traceable standard
Internal NMI service identifier: 26a
 
Line standards. Image analyser graticule (circular spots): grid spacing, 3 Ám to 400 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: 0.25
Image analysis using traceable standard
Internal NMI service identifier: 26b