The company was founded in 1921 under the name "British Sangamo
" as the United Kingdom subsidiary of the "Sangamo Electric Co." of
Springfield, Illinois, USA and initially manufactured integrating
kilowatt hour meters and later expanded its activities to include
industrial time switches.
In 1936 British Sangamo acquired the "Weston Electrical Instrument Co.
" of Surbiton, Surrey. This company was the United Kingdom subsidiary of
the "Weston Electrical Instrument Corporation", of Newark, New Jersey,
USA, a company founded by Dr. Weston (a pioneer in the field of
electrical measurements), and recognized as one of the worlds leading
manufacturers of electrical measuring and associated equipment. The two
companies were combined to form "Sangamo Weston ", which designed and
manufactured a wide range of electrical measuring and control equipment.
Sangamo Weston became associated with products for the aviation industry
and as a result, devoted its entire resources during the 1939-45 war, to
the production of measuring instruments, indicators and associated
ancillary equipment for use on aircraft. After World War 2 resources
were put back into the original product lines but they continued to
design and manufacture aircraft measuring instruments, indicators,
measuring systems and associated equipment for customers all over the
world.
In 1976 the Sangamo Weston Group was acquired by Schlumberger
and is now part of the Roxboro Group.
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