Try buying 5,000 12mm 1.25 bolts in 1976. You could only buy a standard tap.?
Today is not problem .
Even in 1993 to buy a 25 mm shaft you goto machine shop and have turn to get 25mm shaft.
I did get my first metric socket in 1960's?
I did try switching but you just could not buy what need to convert at same price.?
Switching if start in metric is easy . You buy a metric lathe , mill and set metric mics.?
If you inch have all tools it cheaper to stay inch and covert.?
It is just number go cheapest way.?
When I was in high school had one hour? of? everyone got the first class it base on 10. The hard part for some 100¡ãC was very hot.?
Gas prices in metric is a lot better.
One? Liter about ? gal looks a lot better at pump.?
Thank God for DRO'S just a button and back to normal.?
Dave
davesmith1800