Date
21 - 24 of 24
Metric threading
john kling
I take it that the now internationally accepted is close to the post 1900 standard. This I take it means that those with lathes made in the early 1900 will not (from this) have trouble cutting threads to the current American or imperial standards?
On Wednesday, February 28, 2018, 10:50:36 AM EST, junkyard_kahrs@... [SOUTHBENDLATHE] wrote:
Awesome. What a concise and detailed rundown. Not only the how- but the *why* a great 20th-century definition of standards finally settled into its final form.
David Beierl
I take it that the now internationally accepted is close to the post 1900 standard. This I take it means that those with lathes made in the early 1900 will not (from this) have trouble cutting threads to the current American or imperial standards?
I believe the difference amounts to about an eighth of an inch per mile -- of interest to long-distance surveyors, but few others.
Yrs,
d
m. allan noah
Only if you care about 1/8 inch in a mile. :)
allanOn Wed, Feb 28, 2018 at 5:14 PM, john kling jkling222@... [SOUTHBENDLATHE] <SOUTHBENDLATHE@...> wrote:
If the change to a new standard was greater in the UK, is a different set of metric transposition change gears needed for very old imperial lathes?
--
"well, I stand up next to a mountain- and I chop it down with the edge of my hand"