Send/receive terminal from the pneumatic communications equipment made by Hanter Ingenjorsteknik circa 1958
Send/receive terminal from pneumatic communications equipment made by Lamson Engineering Co. Ltd circa 1946
Send/receive "P" terminal from 3" pneumatic communications equipment made by Lamson Engineering Co. Ltd, London, and used at the Refuge Assurance building on Oxford Road, c.1946 Send/receive "P" terminal from 3" pneumatic communications equipment made by Lamson Engineering Co. Ltd circa 1946
Send/receive terminal from 3" pneumatic communications equipment made by Lamson Engineering Co. Ltd, London, and used at the Refuge Assurance building on Oxford Road, c.1946 Send/receive terminal from 3" pneumatic communications equipment made by Lamson Engineering Co. Ltd circa 1946