Carl Edward Johansson of Carl Gustaff Stad Eskilstuna, Sweden; invented the gauge block set, also known as "Jo Blocks" ("Johansson gauge blocks"); granted patent on 2 May 1901, Swedish patent No. 17017, 'Gauge Block Sets for Precision Measurement'
1911 - formed company CE Johansson AB (CEJ AB), Eskilstuna, Sweden; worked for Henry Ford Motor Corporation