Home    Key and supplementary comparisons    Calibration and Measurement Capabilities - CMCs
The BIPM key comparison database
Refine your search
CMC AREA
CMCs Ionizing Radiation
CMCs General Physics (45)
PHYSICS >
Dimensional metrology (45)
End standards (10)
Line standards (7)
Flatness standards (5)
Diameter standards (5)
Surface texture (4)
Gear standards (4)
Roundness standards (3)
Angle by circle dividers (2)
Length instruments (2)
Angle artifacts (1)
Angle instruments (1)
Various dimensional (1)
CHEMICAL MATERIAL
methane
CHEMICAL ANALYTE
methane
carbon dioxide
GEOGRAPHIC LOCATION
EURAMET (45)
United Kingdom (45)
Result of the search
Your query 'United Kingdom' produced 45 results New search
1  2  3

 
United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Length for United Kingdom (.PDF file)
Various dimensional. Extensometer: extension, R, 0 mm to 1000 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: (32 + 4R), R in mm
Interferometry
Internal NMI service identifier: 41
 
End standards. Long gauge block: thermal expansivity a, 0.000009 K-1 to 0.000013 K-1
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in K-1: (0.004 + 11/L + 0.000007L) x 10-6, L in mm
Absolute interferometry exact fractions
Length, L: 100 mm to 1000 mm
Temperature: 18 ░C to 25 ░C
Internal NMI service identifier: 17
 
End standards. Length bar: thermal expansivity a, 0.000009 K-1 to 0.000013 K-1
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in K-1: (0.004 + 11/L + 0.000007L) x 10-6, L in mm
Absolute interferometry exact fractions
Length, L: 100 mm to 1270 mm
Temperature: 18 ░C to 25 ░C
Internal NMI service identifier: 18
 
Surface texture. Depth standard (ISO 5436-1 type A): depth d, 0.0013 Ám to 10 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[1.3, 0.0015d], d in mm
Stylus instrument with laser interferometry in X, Z
Internal NMI service identifier: 42
 
Surface texture. Tip condition standard (ISO 5436-1 type B2), ISO 4287 amplitude parameters, 0.0013 Ám to 10 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[1.3, 0.0015Ra], Ra in mm
Stylus instrument with laser interferometry in X, Z
Parameters (uniform over sampling length): Ra
Internal NMI service identifier: 43
 
Surface texture. Spacing standard (ISO 5436-1 type C), ISO 4287 roughness parameters, 0.0013 Ám to 10 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[1.3, 0.0015Ra], Ra in mm
Stylus instrument with laser interferometry in X, Z
Parameters (uniform over sampling length): Ra, Rsm
Internal NMI service identifier: 44
 
Surface texture. Roughness standard (ISO 5436-1 type D), ISO 4287 amplitude parameters, 0.0013 Ám to 10 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[1.3, 0.0015Ra], Ra in mm
Stylus instrument with laser interferometry in X, Z
Parameters (uniform over sampling length): Ra, Rz
Internal NMI service identifier: 45
 
End standards. Gauge block: central length L, 0.5 mm to 100 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[19, 0.21L], L in mm
Absolute interferometry exact fractions
Approved on 03 August 2011
Internal NMI service identifier: 10
 
End standards. Gauge block: central length L, 0.5 mm to 100 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[32, 0.76L], L in mm
Mechanical comparison
Approved on 03 August 2011
Internal NMI service identifier: 10a
 
Length instruments. Laser interferometer: displacement L, 0 m to 45 m
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: Q[0.08, 0.12L], L in m
Comparison of two interferometers
Approved on 08 October 2012
Internal NMI service identifier: 7
 
Length instruments. Laser interferometer: displacement and wavelength compensation, 0 m to 45 m
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: Q[0.08, 0.2L], L length in m
Comparison of two interferometers
Relative humidity: (50 ± 10) %
Temperature: 15 ░C to 25 ░C
Pressure: 900 hPa to 1050 hPa
Approved on 08 October 2012
Internal NMI service identifier: 8
 
End standards. Step gauge: face spacing L, 10 mm to 1540 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: (0.1 + 0.000232L), L in mm
Modified CMM with heterodyne interferometer
Approved on 08 October 2012
Internal NMI service identifier: 19
 
End standards. Length bar: central length L, 0.5 mm to 100 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[60, 0.21L], L in mm
Absolute interferometry exact fractions
Approved on 22 September 2015
Internal NMI service identifier: 14
 
Diameter standards. Reference sphere: diameter, 8 mm to 50 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: 0.11
Mechanical probe with interferometric sensing
Approved on 22 September 2015
Internal NMI service identifier: 48
 
United Kingdom, NGML (National Gear Metrology Laboratory)
Complete CMCs in Length for United Kingdom (.PDF file)
Gear standards. Spur, or helical gear: profile slope deviation, 10 mm to 650 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: 1
Gear measuring machine
Reference diameter: 10 mm to 650 mm
Approved on 22 September 2015
Internal NMI service identifier: NGML/1
 
Gear standards. Spur, or helical gear: helix slope deviation, 0 ░ to 45 ░
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: 1
Gear measuring machine
Reference diameter: 10 mm to 650 mm
Approved on 22 September 2015
Internal NMI service identifier: NGML/2
 
Gear standards. Spur, or helical gear: pitch adjacent deviation, 10 mm to 650 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: 0.7
Gear measuring machine
Reference diameter: 10 mm to 650 mm
Approved on 22 September 2015
Internal NMI service identifier: NGML/3a
 
Gear standards. Spur, or helical gear: pitch cumulative deviation, 10 mm to 650 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: 1.1
Gear measuring machine
Reference diameter: 10 mm to 650 mm
Approved on 22 September 2015
Internal NMI service identifier: NGML/3b
 
United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Length for United Kingdom (.PDF file)
Diameter standards. External cylinder (plain plug gauge): diameter, D, 0.1 mm to 100 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: (0.07 + 0.0011D), D in mm
Mechanical probe with capacitance sensing (up to 10 mm) and laser interferometer (up to 100 mm)
Approved on 12 September 2016
Internal NMI service identifier: 28
 
Diameter standards. External cylinder (plain plug gauge): diameter, D, 100 mm to 150 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: (0.05 + 0.0014D), D in mm
Mechanical probe with interferometric sensing
Approved on 12 September 2016
Internal NMI service identifier: 29