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CMCs General Physics (33)
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Thailand, NIMT (National Institute of Metrology (Thailand))
Complete CMCs in Length for Thailand (.PDF file)
End standards. Gauge block: central length L, 0.5 mm to 125 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[26, 0.35L], L in mm, values range from 26.0 nm to 50.9 nm
Interferometry exact fractions
Material: steel
Approved on 10 April 2018
Internal NMI service identifier: NIMT/08020-10101
 
End standards. Gauge block: central length L, 0.5 mm to 125 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[26, 0.29L], L in mm, values range from 26.0 nm to 44.6 nm
Interferometry exact fractions
Material: ceramic
Approved on 10 April 2018
Internal NMI service identifier: NIMT/08020-10101
 
End standards. Gauge block: central length L, 0.5 mm to 125 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[26, 0.18L], L in mm, values range from 26.0 nm to 34.4 nm
Interferometry exact fractions
Material: tungsten carbide
Approved on 10 April 2018
Internal NMI service identifier: NIMT/08020-10101
 
End standards. Gauge block: central length L, 0.5 mm to 125 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[26, 0.27L], L in mm, values range from 26.0 nm to 42.6 nm
Interferometry exact fractions
Material: chromium carbide
Approved on 10 April 2018
Internal NMI service identifier: NIMT/08020-10101
 
End standards. Gauge block: central length L, 0.5 mm to 125 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[50, 0.50L], L in mm, values range from 50 nm to 1.2E+02 nm
Mechanical comparison
Material: steel, tungsten carbide and chromium carbide
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08020-10301
 
End standards. Gauge block: central length L, 0.5 mm to 125 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[70, 0.50L], L in mm, values range from 70 nm to 1.4E+02 nm
Mechanical comparison
Material: ceramic
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08020-10301
 
End standards. Gauge block: central length L, 150 mm to 1000 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[50, 0.80L], L in mm, values range from 1.3E+02 nm to 8.5E+02 nm
Mechanical comparison
Material: steel
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08020-10501, 08020-10502, 08020-10503
 
Diameter standards. External cylinder (plain plug gauge): diameter, 0.1 mm to 1 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: 0.24
1-D comparator and 2 contacting probes
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08040-10501
 
Diameter standards. External cylinder (plain plug gauge): diameter D, 1 mm to 100 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: Q[0.23, 1.4E-03D], D in mm, values range from 0.23 Ám to 0.27 Ám
1-D comparator and 2 contacting probes
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08040-10502
 
Diameter standards. External cylinder (plain plug gauge): diameter D, 100 mm to 300 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: Q[0.25, 1.4E-03D], D in mm, values range from 0.29 Ám to 0.49 Ám
1-D comparator and 2 contacting probes
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08040-10503
 
Diameter standards. Internal cylinder (plain ring gauge): diameter D, 0.1 mm to 100 mm
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in Ám: Q[0.37, 1.3E-03D], D in mm, values range from 0.37 Ám to 0.39 Ám
1-D comparator and focusing microscope
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08040-10101
 
Angle by circle dividers. Optical polygon: face angle, 3 faces to 72 faces
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in ": 0.2
Indexing table and one autocollimator, error separation
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08030-10201, -10202, -10203, -10204
 
Angle by circle dividers. Indexing table: index angle, 0 ░ to 360 ░
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in ": 0.2
Cross calibration versus polygon and autocollimator
Measured angle: 360/n ░, number of division n: Measurement interval, n = 3, 4, 6, 8 and 12
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08030-10501
 
Angle instruments. Autocollimator: error of indicated angle, -1000 " to 1000 "
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in ": 0.2
Sine arm and autocollimator
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08030-10101
 
Flatness standards. Optical flat: flatness deviation over whole diameter, 0 Ám to 0.3 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: 4
Fizeau interferometer, three flat test, automatic assessment
Maximum diameter: 60 mm
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08060-10201
 
Flatness standards. Optical flat, optical parallel: flatness, 0 Ám to 0.3 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: 20
Fizeau interferometer, automatic assessment
Maximum diameter: 60 mm
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08060-10101, 08060-10102
 
Flatness standards. Optical parallel: parallelism, 0 Ám to 20 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: 40
Gauge block comparator
Maximum diameter: 60 mm
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08060-10101
 
Roundness standards. Glass hemisphere: roundness R, 0 Ám to 20 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[7.7, 7.6R], R in Ám, values range from 7.7 nm to 1.6E+02 nm
Multi-step, stylus-on-spindle roundness instrument
Diameter: 1 mm to 355 mm
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08060-10301
 
Roundness standards. Internal and external cylinder, magnification standard: roundness R, 0 Ám to 20 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[12, 12R], R in Ám, values range from 12 nm to 2.2E+02 nm
Stylus-on-spindle roundness instrument
Diameter: 1 mm to 355 mm
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08060-10401
 
Surface texture standards. Depth standard, (ISO 5436-1, type A), depth d, 0.025 Ám to 32 Ám
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nm: Q[6.6, 12d], d in Ám, values range from 6.6 nm to 3.8E+02 nm
Stylus instrument
Groove depth, d: ISO 5436-1
Approved on 28 April 2010
Internal NMI service identifier: NIMT/08060-10501