Marconi-Ekco Instruments
1936 July. 'Marconi’s Wireless Telegraph Company and E. K. Cole, Limited, have decided to form a jointly owned company to be called Marconi-Ekco Instruments, Limited, with a nominal capital of £5,000. The chairman will be Lord Inverforth. The main object of the new company will be to combine the activities of both companies in the fields of measuring instruments, diathermy, and electro-medical apparatus. The manufacturing, technical, and research experience of the two companies, it is stated, will enable Marconi-Ekco Instruments, Limited, to offer a complete range of high-class apparatus embracing not only highly specialized precision apparatus for radio and other purposes, but also the more popular general requirements. It is the intention to coordinate and intensify research in connexion with the above mentioned fields. The address of the new company will be Marconi Offices, Electra House, Victoria Embankment, London, W.C.2.'[1]
1938 Electrical Instruments; the "Theracoupler"[2] By 1961 one of these meters was still in use by BBC for field strength measurement but was referred to as Marconi Instruments TME-18[3]
1942 Marconi's Wireless Telegraph Co buy out the shareholding of E. K. Cole in this joint venture. [4]