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| | | Thailand, NIMT (National Institute of Metrology (Thailand)) | | | Complete CMCs in Length for Thailand (.PDF file)
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| 2-D, 3-D instruments. CMM: error of indicated [size; location; shape], up to 1200 x 1000 x 700 mm | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in µm: Q[0.52, 2.0E-03L], L in mm | | Comparison with step gauges | | CMM size: < 1200 mm x 1000 mm x 700 mm | | Approved on 26 January 2012 |
| | | End standards. Step gauge: face spacing, up to 1020 mm | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in µm: Q[0.26, 1.4E-03L], L in mm | | CMM with laser interferometer | | Step gauge size: < 1020 mm | | Approved on 26 January 2012 |
| | | End standards. Caliper checker: face spacing, up to 1020 mm | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in µm: Q[0.30, 2.7E-03L], L in mm | | CMM with laser interferometer | | Caliper checker size: < 1020 mm | | Approved on 26 January 2012 |
| | | CMM artefacts. Ball plate: 2D center coordinates, up to 620 x 620 mm | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in µm: Q[0.27, 1.9E-03L], L in mm | | CMM with laser interferometer using swing round method | | Ball plate size: < 620 mm x 620 mm | | Approved on 26 January 2012 |
| | | Surface texture standards. Depth standard, (ISO 5436-1, type A), depth d, 0.01 µm to 10 µm | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in nm: Q[2.4, 5.4d], d in µm | | Interference microscope and stylus instrument (for pre-measurement) | | Groove depth: ISO 5436-1 | | Approved on 26 January 2012 |
| | | Surface texture standards. Depth standard, (ISO 5436-1, type A), depth d, 0.3 µm to 50 µm | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in nm: Q[75, 7.3d], d in µm | | Non-contact optical profiler | | Groove depth: ISO 5436-1 | | Approved on 26 January 2012 |
| | | Line standard. Precision line scale: line spacing, up to 250 mm | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in nm: Q[41, 100.0E-03L], L in mm | | Line scale interferometer | | Glass scale: low coefficient of thermal expansion (8E-08 K-1) | | Approved on 26 January 2012 |
| | | Line standard. Precision line scale: line spacing, up to 1000 mm | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in µm: Q[0.11, 2.9E-03L], L in mm | | Line scale interferometer | | Glass scale: working standard | | Approved on 26 January 2012 |
| | | Laser radiations. Stabilized laser of the mise en pratique: absolute frequency, 633 nm | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in kHz: 24 | | Optical beat frequency | | Approved on 28 April 2010 | | Internal NMI service identifier: NIMT/08010-10101 |
| | | 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[28, 0.47L], L in mm, values range from 28 nm to 65 nm | | Interferometry exact fractions | | Material: steel | | Approved on 28 April 2010 | | 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[30, 0.39L], L in mm, values range from 30 nm to 57 nm | | Interferometry exact fractions | | Material: ceramic | | Approved on 28 April 2010 | | 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[28, 0.22L], L in mm, values range from 28 nm to 39 nm | | Interferometry exact fractions | | Material: tungsten carbide | | Approved on 28 April 2010 | | 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[28, 0.36L], L in mm, values range from 28 nm to 53 nm | | Interferometry exact fractions | | Material: chromium carbide | | Approved on 28 April 2010 | | 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 µm: 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 µm: Q[0.23, 1.4E-03D], D in mm, values range from 0.23 µm to 0.27 µm | | 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 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 |
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