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eganders
 
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Default Low cost readout for digital caliper

I am looking for a LOW COST remote readout (single, not 3 axis) that
can be used with the low cost calipers such as Harbor Freight sells for
$15.99. Don't kid youself if you have not looked at these, they are a
terrific deal! Accurate, precise and well made. They even have a
communication port.

http://www.harborfreight.com/cpi/cta...emnumber=47257

But if you look for a readout for them, you find places like the Little
Machine Shop that have the 3 axis type of readout or someone that
possibly has a kit, but I have not seen a readout that is ready to go
for a decent price. Too bad you can't just buy a second caliper and
wire it to the first just using the readout from the second.

The reason for the remote readout is that I could use it for
applications such as the height reading in a router table or other
uses.

By the way, has anyone tried this caliper?

http://www.harborfreight.com/cpi/cta...emnumber=93293

I would like to have someone compare this to the $15.99 caliper. This
caliper would allow me to drill into the jaws for mounting. Try to do
that with the $15.99 caliper and you will see why I see them as one of
the best deals going in measurement tools.

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Han
 
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Default Low cost readout for digital caliper

"eganders" wrote in news:1131364946.229605.306630
@g43g2000cwa.googlegroups.com:

By the way, has anyone tried this caliper?

http://www.harborfreight.com/cpi/cta...emnumber=93293


There seems to be a typo in the purported accuracy. I would have thought
that 0.001 inch would be 0.001*25.4 mm=0.02 mm. If it is 0.2 mm, that
would be lousy accuracy

--
Best regards
Han .
email address is invalid
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Larry Bud
 
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Default Low cost readout for digital caliper


Han wrote:
"eganders" wrote in news:1131364946.229605.306630
@g43g2000cwa.googlegroups.com:

By the way, has anyone tried this caliper?

http://www.harborfreight.com/cpi/cta...emnumber=93293


There seems to be a typo in the purported accuracy. I would have thought
that 0.001 inch would be 0.001*25.4 mm=0.02 mm. If it is 0.2 mm, that
would be lousy accuracy


The description says:
"Accuracy: +/- 0.001'' (0.2 mm), Resolution: 0.01'', "

How can something be accurate to 1 mil when the resolution is 10 mil?

  #4   Report Post  
Greg G.
 
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Default Low cost readout for digital caliper

Larry Bud said:

Han wrote:
"eganders" wrote in news:1131364946.229605.306630
@g43g2000cwa.googlegroups.com:

By the way, has anyone tried this caliper?

http://www.harborfreight.com/cpi/cta...emnumber=93293


There seems to be a typo in the purported accuracy. I would have thought
that 0.001 inch would be 0.001*25.4 mm=0.02 mm. If it is 0.2 mm, that
would be lousy accuracy


The description says:
"Accuracy: +/- 0.001'' (0.2 mm), Resolution: 0.01'', "

How can something be accurate to 1 mil when the resolution is 10 mil?


The wonders of modern marketing.
If you can't dazzle 'em with brilliance, buffalo 'em with B.S.


Greg G.
  #5   Report Post  
David Merrill
 
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Default Low cost readout for digital caliper

Try the links from this thread on rec.crafts.metalworking.
http://groups.google.com/group/rec.c...09b539 e972ce

There have been other threads there on related subjects, one linking to this
site.
http://www.motor-manufaktur.de/werks...ro/part_3.html

David Merrill

"eganders" wrote in message
oups.com...
I am looking for a LOW COST remote readout (single, not 3 axis) that
can be used with the low cost calipers such as Harbor Freight sells for
$15.99. Don't kid youself if you have not looked at these, they are a
terrific deal! Accurate, precise and well made. They even have a
communication port.

http://www.harborfreight.com/cpi/cta...emnumber=47257

But if you look for a readout for them, you find places like the Little
Machine Shop that have the 3 axis type of readout or someone that
possibly has a kit, but I have not seen a readout that is ready to go
for a decent price. Too bad you can't just buy a second caliper and
wire it to the first just using the readout from the second.

The reason for the remote readout is that I could use it for
applications such as the height reading in a router table or other
uses.

By the way, has anyone tried this caliper?

http://www.harborfreight.com/cpi/cta...emnumber=93293

I would like to have someone compare this to the $15.99 caliper. This
caliper would allow me to drill into the jaws for mounting. Try to do
that with the $15.99 caliper and you will see why I see them as one of
the best deals going in measurement tools.





  #6   Report Post  
eganders
 
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Default Low cost readout for digital caliper

This is a good piece of info. I guess I am lazy, but I would like to
just buy a commercial product that has a single readout instead of
putting one together. About 20 years ago I would jump right in, but
now I would just like to "use" it and work on a wood project!!

  #7   Report Post  
CW
 
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Default Low cost readout for digital caliper

The output is not for a readout. It's for interfacing with an SPC recorder
or PC.

"eganders" wrote in message
oups.com...
I am looking for a LOW COST remote readout (single, not 3 axis) that
can be used with the low cost calipers such as Harbor Freight sells for
$15.99. Don't kid youself if you have not looked at these, they are a
terrific deal! Accurate, precise and well made. They even have a
communication port.

http://www.harborfreight.com/cpi/cta...emnumber=47257

But if you look for a readout for them, you find places like the Little
Machine Shop that have the 3 axis type of readout or someone that
possibly has a kit, but I have not seen a readout that is ready to go
for a decent price. Too bad you can't just buy a second caliper and
wire it to the first just using the readout from the second.

The reason for the remote readout is that I could use it for
applications such as the height reading in a router table or other
uses.

By the way, has anyone tried this caliper?

http://www.harborfreight.com/cpi/cta...emnumber=93293

I would like to have someone compare this to the $15.99 caliper. This
caliper would allow me to drill into the jaws for mounting. Try to do
that with the $15.99 caliper and you will see why I see them as one of
the best deals going in measurement tools.



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John Thomas
 
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Default Low cost readout for digital caliper

"eganders" wrote in
oups.com:

I am looking for a LOW COST remote readout (single, not 3 axis) that
can be used with the low cost calipers such as Harbor Freight sells
for $15.99. Don't kid youself if you have not looked at these, they
are a terrific deal! Accurate, precise and well made. They even have
a communication port.

http://www.harborfreight.com/cpi/cta...emnumber=47257


Yeah, those are great calipers for the price; I bought one for SWMBO for
last Christmas, I think. I've got one of their regular dial calipers for
myself that I paid about that much for, a couple of years before. I
wouldn't buy Starrett for my use in the shop ... but they are awfully
handy to have at that price-point.

Communications port? I wasn't aware that it had one, but I didn't look
too closely ...

--
Regards,

JT
Speaking only for myself....
  #9   Report Post  
eganders
 
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Default Low cost readout for digital caliper

The little cover opposite the battery cover is where the port is. The
catch to the whole thing is that any readout appears to be 3 axis and
the cost soon makes you forget the deal you got on the caliper.

  #10   Report Post  
John Thomas
 
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Default Low cost readout for digital caliper

"eganders" wrote in news:1131712428.896342.239680
@o13g2000cwo.googlegroups.com:

The little cover opposite the battery cover is where the port is. The
catch to the whole thing is that any readout appears to be 3 axis and
the cost soon makes you forget the deal you got on the caliper.


Thanks for the followup; our use is just as a digital readout caliper,
so it was still a heckuva dea ;-).

As a geek, though, I have to admit I'm intrigued by the communication
possibility ...

--
Regards,

JT
Speaking only for myself....


  #11   Report Post  
 
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Default Low cost readout for digital caliper

eganders wrote:
I am looking for a LOW COST remote readout (single, not 3 axis) that
can be used with the low cost calipers such as Harbor Freight sells for
$15.99. snip


About three years ago I bought some of these generic Chinese digital
calipers for a measurement fixture I was building. The instructions
that came with them said there was an optional data cable available, so
I called the dealer to get some. After going through much of their
technical support office, I finally got someone who explained it to me
this way:

The innards of these calipers are a copy of the Mitutoyo. Since
Mitutoyo has a data port (used for data collection in industrial SPC
systems), the Chinese calipers also come with a data port.
Unfortunately, the port doesn't work. The caliper manufacturer(s) in
China copied the text from the Mitutoyo manual, including the bit about
the optional cable, but they don't even sell a data cable at the
wholesale level. Thus, no dealers have cables to sell.

I'm sure it'd be a good market niche -- these things are so cheap that
wherever you've got a scale on a machine, why not slap on a dedicated
digital readout for less than $20?

Tim

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