WoodburnBob
Aluminum
- Joined
- Apr 14, 2004
- Location
- PDX (Oregon)
I'm reading a biography of CE Johansson and his gauge blocks:
Torsten K.W. Althin. C.E. Johansson 1864-1943: The Master of Measurement. Stockholm,1948
It's pretty astonishing when he did this and that when he began he and his wife were doing this in their kitchen by using a converted sewing machine.
Granted he prepared the gauges by machines at the rifle factory and hardened the steel there before bringing home the rough forms. But, I'm very perplexed how he and his wife might have managed to get flat and parallel surfaces of such incredible accuracy and precision. Evidently he kept the process secret.
Anyone know how it was done?
Torsten K.W. Althin. C.E. Johansson 1864-1943: The Master of Measurement. Stockholm,1948
It's pretty astonishing when he did this and that when he began he and his wife were doing this in their kitchen by using a converted sewing machine.
Granted he prepared the gauges by machines at the rifle factory and hardened the steel there before bringing home the rough forms. But, I'm very perplexed how he and his wife might have managed to get flat and parallel surfaces of such incredible accuracy and precision. Evidently he kept the process secret.
Anyone know how it was done?