I am very impressed that most of you people in this forum use either inches or millimeters.
Will somebody please tell those august contributers to AS & S that me, the reader - having been brought up in the good old days of the Imperial system - have only just got used to mm. I am an Engineer and we consider the use of cm to be the domain of the rag trade and misinformed educationalists who teach cm in schools. I had to do a mental calculation this morning when reading in the magazine.." should be visible in a 7.5cm"
Centimeters are housewives units, not technical units.
