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| | | Thailand, NIMT (National Institute of Metrology (Thailand)) | | | Complete CMCs in Length for Thailand (.PDF file)
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| Diameter standards. External cylinder (plain plug gauge): diameter D, 100 mm to 300 mm | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in µm: Q[0.25, 1.4E-03D], D in mm, values range from 0.29 µm to 0.49 µm | | 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 µm: Q[0.37, 1.3E-03D], D in mm, values range from 0.37 µm to 0.39 µm | | 1-d comparator and focusing microscope | | Approved on 28 April 2010 | | Internal NMI service identifier: NIMT/08040-10101 |
| | | Angle by circle divider. 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 divider. Indexing table: index angle, 360/n ° | | 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: 3, 4, 6, 8 and 12 | | Approved on 28 April 2010 | | Internal NMI service identifier: NIMT/08030-10501 |
| | | Angle instrument. 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 |
| | | Angle artefacts. Angle blocks: included angle, 0 ° to 90 ° | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in ": 0.35 to 0.55 | | Indexing table and two autocollimators | | Approved on 28 April 2010 | | Internal NMI service identifier: NIMT/08030-10401, 08030-10402 |
| | | Flatness standard. Optical flat: flatness deviation over whole diameter, 0 µm to 0.3 µm | | 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 standard. Optical flat, optical parallel: flatness, 0 µm to 0.3 µm | | 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 standard. Optical parallel: parallelism, 0 µm to 20 µm | | 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 µm to 20 µm | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in nm: Q[7.7, 7.6R], R in µm, 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 µm to 20 µm | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in nm: Q[12, 12R], R in µm, 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. Depth standard, (ISO 5436-1, type A), depth d, 0.025 µm to 32 µm | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in nm: Q[6.6, 12d], d in µm, 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 |
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