Hi Don:
Sure converting lengths is easy and I have metric, English and weird taps and
dies, but how do you turn metric threads?
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/Brooke4Congress.html
Don Couch wrote:
The idea that conversion to metric would require replacing all of the machine
tools (lathes, mills, etc) is a myth. Any U.S. machine shop has walls and
toolboxes covered in conversion charts, converting drill, screw, wire, sheet
sizes from one crazy measurement to another. One single additonal conversion
chart, inch to metric, and you can keep using your inch machines on metric
projects.
My mill has inch lead screws. I added a low cost digital readout with a little
button to show inch or millimeter movements, and now I do everything in metric.
No problem.
Don Couch
--- On Thu, 12/15/11, Dan Kemppainen<d...@irtelemetrics.com> wrote:
From: Dan Kemppainen<d...@irtelemetrics.com>
Subject: Re: [time-nuts] time-nuts Digest, Vol 89, Issue 51
To: time-nuts@febo.com
Date: Thursday, December 15, 2011, 10:29 AM
On 12/14/2011 3:59 PM, time-nuts-requ...@febo.com
wrote:
It's not like metric is totally absent. We drink
2 liter cokes and defend
ourselves with 9mm pistols. Our cars
use mostly metric parts. Even ham
radio operators, arguably the most jingoistic and set
in the past bunch
around, get on the 80, 40, and 20 METER bands.
I agree with you, and funnily enough the rest of the NATO
world uses 7.62mm and 5.56mm rifles. (Both were originally
based on standard inch sized rifle cartridges designed in
the US)
The problem in converting to metric would require replacing
a lot of tools. For example Mills, lathes, and other
machining tools and measurement devices are expensive, and
last for decades. I doubt many of the small tool shops
around here could afford it.It's a great idea to standardize
in theory, but in practice it becomes difficult. Maybe the
whole world should standardize our language. We could all
switch to Spanish or Latin or Chinese to speak with so we
could all talk with each other. That would probably be more
helpful to me on a daily basis, than having to switch
measurement systems.
While we're on the subject, let me throw time back into the
mix. We use months and days for scheduling projects.
Meanwhile some of our counterparts use calendar weeks. This
is much more difficult to convert between than inch and mm.
When is CW 36???
There I threw some wood on the fire too!
Dan
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