ORIGINAL: downunder
ORIGINAL: JollyPopper
Downunder, is Australia all metric?
We've been 100% metric for about 20 years now. America and 2 third world countries are the only ones still not metric, although in America's defence you're looking at the way Australia did the changeover because ours appears to have been the easiest.
Dar, I noticed those MVVS sizes and couldn't believe they're the same as my old OS Max-III .15's.
Manufacturers in the States are still supporting legacy products dimensioned in inches, but if you look at the prints you'll find metric dimension. A 3/8" shaft or bolt shank might be dimensioned
ΓΈ 9.525, and the threads will be listed as 3/8-16 (for example). I've seen old prints redrawn to have metric dimension specs, but the product didn't change.
New designs are commonly all metric, but since fasteners dimensioned in inch are still available, they might be specified on a new print. All-New designs are commonly (all right, not exclusively) dimensioned and specified using Metric.
When demand for the legacy products goes away, the new ones will all be dimensioned in Metric. I don't see that demand disappearing, or even fading, for years.
In a niche market like the RC engine market, I could see the switch to metric taking place more quickly. Me, I just don't care, a dimension is a dimension, and a trip to the hobby shop (or hardware store, or lumberyard) is still just a trip.
Good luck,
Dave Olson