How do you remember which end is which?Living today in the US of A you really need both systems...
You really don't need two adjustables any more.
You can buy both in one wrench. Metric on one end and imperial at the other...
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I am 58, raised on 'Merican'. I work on lots of Japanese and European stuff, and can wrench in metric. Wrenches, sockets, etc. I know all the wrench sizes that do and do not cross. But when I build something, I work exclusively in inch.When someone says a few thou or a couple of hundred thou, I can get a visual of how much that is. But when it comes to metric I'm lost
One good reason the US has not converted to Metric is the cost.
Can you imagine what the cost would be to the transportation system to replace every sign on every roadway, train track, and other speed, distance or weight sign would be!
That alone would cost another trillion or two, and we are not needing that added to the deficit.
As for me, I use both systems when it is needed.
One thing tho that ticks me of is some of the older vehicles have a mixture of Metric and Imp nuts and bolts in use. I guess the manufacturer didn't want to waste the leftover imp hardware and kept using it in some applications.
I am 58, raised on 'Merican'. I work on lots of Japanese and European stuff, and can wrench in metric. Wrenches, sockets, etc. I know all the wrench sizes that do and do not cross. But when I build something, I work exclusively in inch.