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Sira (group of British companies)
Sira is a UK-based Notified Body, specialising in ATEX, IECEX and North American product approvals.
== Foundation ==
Sira began life as the British Scientific Instrument Research Association (BSIRA). It was founded in 1918 by a Committee of the Privy Council for the promotion of scientific and industrial research and supported by the DSIR.〔Sean F. Johnston, ''A History of Light and Colour Measurement: Science in the Shadows'', CRC Press, 2001, ISBN 1420034774〕 The first members of the association were representatives of the optical industry, but these were joined in the same year by the electrical scientific instrument, electromedical, and X-ray industries. Its first director of research was Sir Herbert Jackson (1863–1936).〔Williamson, J.W., ''(Industrial Research Associations: I—British Scientific Instrument Research Association )'', in ''Nature'' 106, 346-348 (11 November 1920), accessed 2014-06-29〕
BSIRA's London headquarters were destroyed in the Second World War and in 1947 the association moved to a site in South Hill, Chislehurst, a Grade II Listed former private house called 'Sitka'〔"('Sitka', South Hill, Chislehurst )", Kent History Forum, accessed 2014-06-29〕〔"(SIRA MAIN BUILDING (ORIGINALLY CALLED SITKA) )", English Heritage, accessed 2014-06-29〕 By the 1960s the association had become better-known as 'Sira',.〔Collins, A.H., ''(A cell design for radio-frequency titrimetry )'', accessed 2014-06-29〕 It evolved into a group of British engineering companies, based in south London, that designed test equipment and provided calibration services.
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