Marconi Instruments Limited

Company type	Public limited company
Industry	Engineering
Founded	1936
Defunct	1998
Fate	Sold toIFR Systems Inc. in 1998, which was then acquired byAeroflex in 2002.
Successor	IFR Systems Aeroflex
Headquarters	St Albans, England, UK
Key people	R. E. Burnett (managing director)[1]
Products	Electronics

Marconi Instruments Limited^[2] (MI) was a British company, one of theMarconi group of companies, formerly part ofGEC. Originally formed in 1936,^[3][1] there was a buyout of Marconi-Ekco Instruments to form the company Marconi Instruments in 1941.^[4]

The company was based inSt Albans,^[5]Colchester andStevenage (where it eventually consolidated), all in southernEngland. Prior to the consolidation in Stevenage, its main site was atLongacres^[6] on the eastern outskirts of St Albans, where it was the largest employer. There were four other sites, one at Hedley Road, one on Hatfield Road, St Albans (Fleetville Works), one on the Donibristle Industrial Estate inFife,Scotland and one atLuton Airport,Luton.

The company produced electronic test and measurement equipment and systems,^[7] includingautomatic test equipment.^[8][9][10] It was known for its extensive range ofsignal generators, fromaudio up tomicrowave frequencies. It also madeoscilloscopes,voltmeters,spectrum analysers,frequency counters,function generators, component (LCR) bridges,impedance analysers,power supplies,distortion analysers,moisture meters andlogic analysers. The company operated an approvedcalibration andmetrology laboratory for theelectronics industry.^{[citation needed]}

Marconi Instruments was sold toIFR Systems Inc. in 1998, itself acquired byAeroflex in 2002.^[11] The name is no longer used.^{[citation needed]}

Companies with "Marconi" in their name can trace their ultimate origins, through mergers and takeovers, to The Marconi Company Ltd., founded byGuglielmo Marconi in 1897 asThe Wireless Telegraph & Signal Company.^{[citation needed]}

• 1936 establishments in England
• 1998 disestablishments in England
• British companies established in 1936
• Electronics companies established in 1941
• Technology companies established in 1941
• Technology companies disestablished in 1998
• Electronics companies of the United Kingdom
• Defunct technology companies of the United Kingdom
• Buildings and structures in St Albans
• General Electric Company
• History of St Albans
• History of Colchester
• Companies based in Stevenage

• Use dmy dates from November 2017
• Use British English from November 2017
• All articles with unsourced statements
• Articles with unsourced statements from May 2014