![Massimo on Twitter: "This is what happens when you try to divide by zero on a 1956's Friden STW10 mechanical calculator. As seen on other machines, the calculator goes into an infinite Massimo on Twitter: "This is what happens when you try to divide by zero on a 1956's Friden STW10 mechanical calculator. As seen on other machines, the calculator goes into an infinite](https://pbs.twimg.com/ext_tw_video_thumb/1463975022607876096/pu/img/AjQYz6AeqlTAIs08.jpg:large)
Massimo on Twitter: "This is what happens when you try to divide by zero on a 1956's Friden STW10 mechanical calculator. As seen on other machines, the calculator goes into an infinite
![Per today's LTT… My (father's) circa 1955 Friden STW-10. Only partially works as the carriage shift is jammed so it can't correctly multiply or divide. : r/pcmasterrace Per today's LTT… My (father's) circa 1955 Friden STW-10. Only partially works as the carriage shift is jammed so it can't correctly multiply or divide. : r/pcmasterrace](https://preview.redd.it/per-todays-ltt-my-fathers-circa-1955-friden-stw-10-only-v0-ybrj9fhtuya81.jpg?width=640&crop=smart&auto=webp&s=9c9fa49f2f35fa0f9516a4b6b9746933d5af5965)
Per today's LTT… My (father's) circa 1955 Friden STW-10. Only partially works as the carriage shift is jammed so it can't correctly multiply or divide. : r/pcmasterrace
![Friden Model STW 10 Electro Mechanical calculator. I used to service these machines in the early 1960's. | Mechanical calculator, Calculator, Computer technology Friden Model STW 10 Electro Mechanical calculator. I used to service these machines in the early 1960's. | Mechanical calculator, Calculator, Computer technology](https://i.pinimg.com/originals/06/c9/10/06c91091d5b442997280b0d9b880f99f.jpg)