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ROUGHNESS/FINISHED comparator
Most production machine Shop will have this for both quoting and doing.
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This also used in design and? engineering so can receive the finished whan on part. This finished can change the cost of making the parts.
This where I used is beside the drafting board.? First start with black plastic and later purchase the chrome one for better view.??
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So if see this on drawing you know more about why.?
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Dave |
Hardness tesrters
Here pass from 1970’s patten too.
A ball drop
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Today's hardness tester?
A ball drop notice the size?
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[COLOR="#800000"][b] [CENTER]???? ? ??? [/CENTER].? ?[/B][/COLOR]?
This side I use on I purchased in the mid 1970’s I have posted this side only? since 1999. one first got the Kro printer for drafting in 1979 I hardness for ?" plate since most die work using ?" stickand only side showed?
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============= other brand =============
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This today's $279.00 you buy new 2025
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=====The day I purchasedin mid 1970’s====
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This is how came brand new in mid 1970’s.?
The above is side post since 1999 on groups.
They used Millimeter in the mid 1970’s?
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WHAT I SAY IS Hight lite to see answer?
?COPY CAT?
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WHAT DO YOU THINK??
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Re: Magnetic North vs True North
开云体育It's hard to find current data, but the movement of the poles has been speeding up.? You can see it some from 1980 to 2015 but it's moved quite a bit in 10 years.? The south pole is headed for the Indian Ocean.? Also the strength has been dropping which can cause instability in a compass.Getting current data is again not easy.? Some sources have the rate of decrease accelerating past this chart. On 28-Feb-25 7:49, davesmith1800 wrote:
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Re: My project thread
Looks great?
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Dave?
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On Thu, Feb 27, 2025 at 02:14 PM, Nitro wrote:
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