Document - Text, Branch Exchanges and blind switchboard operators, 1969?

Historical information

Copy of page from pamphlet about the modifications required for a blind switchboard operator for Private Manual Branch Exchanges (PBX) and Private Auto Branch Exchanges (PABX). Collected by C.H. Nipper during his writing of 'The Past and the Present 1866-1971' (a history of the RVIB).

Physical description

1 foolscap photocopied page from pamphlet

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