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Scientific Instrument Society
founded 1983
"The Scientific Instrument Society (SIS) was formed in April 1983 to bring together people with a specialist interest in scientific instruments, ranging from precious antiques to electronic devices only recently out of production."
"25 Years of the SIS ," SIS, http://www.sis.org.uk/history/25-years-of-the-sis (accessed 07/01/2015)