J E Decker 1, J Altschuler 2, H Beladie 3, I Malinovsky 3, E Prieto 4, J Stoup 5, A Titov 3, M Viliesid 6 and J R Pekelsky 1
1
Dimensional Metrology Program, Institute for National Measurement Standards (INMS), National Research Council Canada (NRC), Ottawa, Canada K1A 0R6
2
Centro de Investigación y Desarrollo en Fisica, Instituto Nacional de Tecnologia Industrial (INTI), Parque Tecnolgico Miguelete: Av. General Paz entre Albarellos y Constituyentes, CC 157 - (1650) San Martin, Buenos Aires, Argentina
3
Instituto Nacional de Metrolgia, Normalizacao e Qualidade Industrial (INMETRO), Av. N S das Graas 50, Duque de Caxias, Rio de Janeiro, Brazil
4
Centro Espanol de Metrologia (CEM), Alfar, 2 - 28760 Tres Cantos, Madrid, Spain
5
National Institute of Standards and Technology (NIST), Room B113, Metrology Building, Gaithersburg, MD 20899-0001, USA
6
Metrologia Dimensional, Centro Nacional de Metrología (CENAM), Apartado Postal 1-100, Centro 76000 Queretaro, Queretaro, Mexico
J E Decker et al 2007 Metrologia 44 04001
Results of the Stage One portion of the Inter-American System of Metrology (SIM) regional international comparison of gauge block calibration by optical interferometry are presented. In this measurement round-robin, short gauge blocks, six made of steel and six made of tungsten carbide, in the range of nominal length from 2 mm to 100 mm, were calibrated by five national metrology institutes (NMIs) of the SIM region, and one NMI from EUROMET. By employing the technique of optical interferometry, each of the laboratories establishes a direct link to their national primary standard of length through the calibrated laser wavelengths. Results of central length calibration are presented and discussed with regard to vacuum wavelength correction for refractive index of air, phase-change on re.ection and wringing effects. Measurement uncertainty evaluation is also discussed.
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Issue 1A ( 1 January 2007)
J E Decker et al 2007 Metrologia 44 04001
Dionisio Hernández et al 2007 Metrologia 44 01011
Otto Jusko et al 2006 Metrologia 43 04006
Kurt Weyand 2005 Metrologia 42 01006
W Sabuga et al 2005 Metrologia 42 07005
Kenichi Fujii et al 2006 Metrologia 43 07007
Jong S Paik et al 2007 Metrologia 44 07005
A Gosset and T Madec 2005 Metrologia 42 07003
H-J von Martens et al 2003 Metrologia 40 09001
R Thalmann 2002 Metrologia 39 165