Author Topic: When ya can't tell C70 from C55 ....  (Read 5513 times)

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jpec

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Re: When ya can't tell C70 from C55 ....
« Reply #30 on: June 24, 2020, 01:01:19 PM »
0
An "at least when Peteski rants he gets his facts straight"  would be stellar...

Can somehow, this whole thing be a banner image?
"trees are non-judgmental, and they won't abuse or betray you."- DKS

jpec

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Re: When ya can't tell C70 from C55 ....
« Reply #31 on: June 24, 2020, 01:04:18 PM »
0
I vote for an Emily Latella emoji...

Yeah, "Best Of Rants".  :D
"trees are non-judgmental, and they won't abuse or betray you."- DKS

Doug G.

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Re: When ya can't tell C70 from C55 ....
« Reply #32 on: June 24, 2020, 01:54:16 PM »
-3
We can all thank the nut environmentalists for the battery thing.

Back when I worked in the hearing aid industry, there were mercury and silver batteries to power them. The mercury batteries, in themselves, were good enough but the silver batteries would last almost indefinitely in a hearing aid.

Then they outlawed both types and replaced them with air cells which are comparatively crap even though they were extolled as the greatest thing since ears.

One tip, replace the stick-on cover over the air holes when the battery is not in use. It will greatly extend its life.

Doug
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CRL

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Re: When ya can't tell C70 from C55 ....
« Reply #33 on: June 24, 2020, 02:07:26 PM »
0
...or you could buy one with a cord.  :trollface:

Doug G.

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Re: When ya can't tell C70 from C55 ....
« Reply #34 on: June 24, 2020, 02:15:24 PM »
0
Actually, for testing purposes, we had simulator "pills" made up to use instead of batteries, They resembled batteries with flexible flat strips coming out of them to connect to a battery eliminator.

We designed those after realizing how much money the company was spending on batteries just to test the hearing aids.

Doug
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coosvalley

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Re: Great play, Micro Engineering
« Reply #35 on: June 24, 2020, 03:28:15 PM »
+1
It's C55 rail, I know it by sight.

This reminds me of a saying that goes something like....

"Those who do not make declarative statements are less apt to look foolish in retrospect"

peteski

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Re: When ya can't tell C70 from C55 ....
« Reply #36 on: June 24, 2020, 04:51:31 PM »
+1
We can all thank the nut environmentalists for the battery thing.

Back when I worked in the hearing aid industry, there were mercury and silver batteries to power them. The mercury batteries, in themselves, were good enough but the silver batteries would last almost indefinitely in a hearing aid.

Then they outlawed both types and replaced them with air cells which are comparatively crap even though they were extolled as the greatest thing since ears.

One tip, replace the stick-on cover over the air holes when the battery is not in use. It will greatly extend its life.

Doug

So now, to totally derail this thread we are talking about hearing aid batteries. How typical for TRW.  :)

Ok Doug, here is the scoop about the digital caliper batteries.  Most of those digital calipers use the very popular (used in many electronic gadgets) LR44 button battery. It is an alkaline battery (no air holes to cover).  There is also a silver oxide version of that battery still available: SR44SW.

They are both available from Digikey and Mouser.
LR44 Chemistry:alkaline, Capacity: 120 mAh, Price $0.45ea in quantity of 10
SR44SW Chemistry: Silver Oxide, Capacity: 160 mAh, Price: $2.74ea in quantity of 10

As you can see, the capacity is not that much different, but the price is.  I have no problem changing the alkaline battery in my caliper once a year, paying only 45 cents per battery rather than $2.74 for the silver oxide version.
. . . 42 . . .

Doug G.

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Re: When ya can't tell C70 from C55 ....
« Reply #37 on: June 24, 2020, 10:42:02 PM »
0
Hehe, I knew that. It's just that I use my brother's hearing aid batteries in my calipers so I wasn't thinking of the official ones.

:D

Doug
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basementcalling

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Re: When ya can't tell C70 from C55 ....
« Reply #38 on: June 24, 2020, 10:54:20 PM »
+1
After reading through this thread I asked myself "can I add value to this discussion in some way?"  You'll be happy to know that I concluded that no...no I can't.   :D

Shameful. It hasn't stopped anyone else.
Peter Pfotenhauer

mmagliaro

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Re: Great play, Micro Engineering
« Reply #39 on: June 25, 2020, 09:47:26 PM »
+1
I did simply post the link as a snarky reply, but I do love my 30+ year old Mitutoyo dial calipers... Pleasure to use and I can trust them to be consistant and accurate...  :D
Well, now you've done it.  I have used an inexpensive dial caliper for years (made in China), and it seems pretty accurate, measures to .001", and always returns to zero.  But since you pointed up the snazzy Mitutoyo, I sniffed around.  Turns out that you can find those and nice older 100% US made Starrett calipers for under $100.   New ones are $135+ at best, and the Starrett are no longer US made.  The Mitutoya is and always was made in Japan.  So anyway, I scored one of the American-made Starrett models for $65.  Looks clean and spotless in the eBay ad.   We'll see (ha ha ha).   Now I'm about to find out if it is in any way better than the $20 pair I have from China.

Chris333

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Re: When ya can't tell C70 from C55 ....
« Reply #40 on: June 25, 2020, 09:51:04 PM »
+1
You can measure your calipers with your calipers.

Missaberoad

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Re: Great play, Micro Engineering
« Reply #41 on: June 25, 2020, 11:46:00 PM »
+1
Well, now you've done it.  I have used an inexpensive dial caliper for years (made in China), and it seems pretty accurate, measures to .001", and always returns to zero.  But since you pointed up the snazzy Mitutoyo, I sniffed around.  Turns out that you can find those and nice older 100% US made Starrett calipers for under $100.   New ones are $135+ at best, and the Starrett are no longer US made.  The Mitutoya is and always was made in Japan.  So anyway, I scored one of the American-made Starrett models for $65.  Looks clean and spotless in the eBay ad.   We'll see (ha ha ha).   Now I'm about to find out if it is in any way better than the $20 pair I have from China.

That brought a smile to my face  :D
I've never had my hands on a Starrett set so I'm not sure how it will measure up, but based on their other precision measuring tools you should be happy...

This seems like a good spot to put some AVE.

The Railwire is not your personal army.  :trollface:

mmagliaro

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Re: When ya can't tell C70 from C55 ....
« Reply #42 on: June 29, 2020, 11:13:59 PM »
+1
The Starrett model 120 caliper arrived today.  I also bought a replacement bezel for it (because the original one was broken, which is why the price was low).  Replacing the bezel was trivial.  It's a pry-off, push-on job.  It works beautifully and is certainly accurate (a .038" drill bit measures exactly .038" and a .037" measures .037"... good enough for me!)  Whether it is more accurate than my $20 import one, I don't know.  I will make some measurements.  I know I have a few drill bits around here that always perplexed me because the caliper never seemed to measure them as differently (about .001") as I thought it should.  So I'll try that on both and see how they do.  The motion was smooth, even before I took the dial carriage off the rack and cleaned out the rack and pinion.  It shows some signs of age, like a few little blemishes on the dial, but I'm not concerned.  Owning an "antique" is more fun sometimes.

thomasjmdavis

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Re: Great play, Micro Engineering
« Reply #43 on: June 30, 2020, 08:16:06 AM »
0
That brought a smile to my face  :D
I've never had my hands on a Starrett set so I'm not sure how it will measure up, but based on their other precision measuring tools you should be happy...

This seems like a good spot to put some AVE.

/>
I must have the $12 version instead of the $10 version- the fit and finish of my Chinese knock off is MUCH finer than the Chinese knock off in the video. 
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chicken45

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Re: Great play, Micro Engineering
« Reply #44 on: June 30, 2020, 09:27:53 AM »
0
That brought a smile to my face  :D
I've never had my hands on a Starrett set so I'm not sure how it will measure up, but based on their other precision measuring tools you should be happy...

This seems like a good spot to put some AVE.

/>

Dude this is the greatest thing I have ever watched.
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