B-1947_Office_with_15_Comptometers - copie.jpg Colossus computerThumbnails02-04-eniac1-okColossus computerThumbnails02-04-eniac1-okColossus computerThumbnails02-04-eniac1-okColossus computerThumbnails02-04-eniac1-okColossus computerThumbnails02-04-eniac1-ok
Office with 15 Comptometers

https://www.officemuseum.com/calculating_machines_key_driven.htm