Re: Off Topic measuring units
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I have a ~4" vernier caliper from the around the time Sweden was changing their measuring system around 1875. Three of the scales I've ID'd, but one is really odd- the unit size is about 1.6".? One of the scales is "tums", (thumbs), which were about .97".
-Dave
On Friday, September 15, 2023 at 08:59:20 AM PDT, Martin P. via groups.io <mdupreno1@...> wrote:
I will readily admit the Metric system (Actually S.I.) is more logical and calculation-friendly.
I grew up with U.S. Customary, so that is most natural for me. That said, I do like the color (colour) of U.S./Imperial system.
The foot was originally supposed based an English king's foot. Someone here knows which one. The mile is from Latin mille, 1000. Originally 1000 Roman long paces (about 5').
IOW, based on something tangible. The meter was like that originally, one ten-millionth of the distance from the to the along a . Redefined several times into something arbitrary.
Which adds another wrinkle to U.S. Customary. Now we have two different feet, the common or officially the International Foot, which is based on a metric conversion. The U.S. Survey Foot, which corresponds to the original foot used in historical surveys. (1 FTUS = 1.000002 FT) It can make a significant difference when using State Plane Coordinates, which here in Florida the Northings and Eastings run into six digits left of the decimal.
Martin P.
On Thursday, September 14, 2023 at 09:23:02 PM EDT, Gerald Feldman <gfeldman2904@...> wrote:
Metric rocks <snip> furlongs per fortnight. ? Jerry F. ? ? ?
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