1937 Comptometer Business Machine
The office where I worked in 1956 had several of these and I had to use one of them at times. They utilized mechanical pushbuttons and the user would often need to push several buttons at a time, thus contorting one's hands to push the right combination of buttons. They were very "clunky" and awkward, but when management offered to buy electrical versions the Cost Department staff wanted nothing to do with them.
1937 Comptometer Business Machine
The office where I worked in 1956 had several of these and I had to use one of them at times. They utilized mechanical pushbuttons and the user would often need to push several buttons at a time, thus contorting one's hands to push the right combination of buttons. They were very "clunky" and awkward, but when management offered to buy electrical versions the Cost Department staff wanted nothing to do with them.