sentences:  He received a number of awards and honors, including the large gold medal of the Royal Swedish Academy of Engineering Sciences, posthumously in 1943, shortly after his death.In the 1910s, the U.S. and U.K. definitions of the inch differed, with the U.S. inch being defined as 25.4000508mm (with a reference temperature of 68 degrees Fahrenheit) and the U.K. inch at 25.399977mm (with a reference temperature of 62 degrees Fahrenheit).When he started manufacturing gauge blocks in inch sizes in 1912, Johnanson's compromise was to manufacture gauge blocks with a nominal size of 25.4mm, with a reference temperature of 20 degrees Celsius, accurate to within a few parts per million of both official definitions.