Four gramme radium teletherapy apparatus (the third Westminster Hospital "bomb"), made by F. Rock Carling at the hospital, London, 1930. Four gramme radium teletherapy apparatus (the third Westminster Hospital "bomb")
Four gramme radium teletherapy apparatus (the second Westminster Hospital "bomb"), made by E. Rock Carling at Westminster hospital, London, 1929. Radium Teletherapy Apparatus used at Westminster Hospital