Tools, Sharpening and Power Machinery - Calipers
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Mark_MS
08-27-07, 11:13 AM
I have a set of digital readout calipers.
My question is when the outside measurement prongs are closed what is the purpose of the gap at the top?? There is also a gap on the inside prongs as well, but they are on the bottom of those prongs. Any ideas??
There is no explanation in the instructions.
Mark_ms
My question is when the outside measurement prongs are closed what is the purpose of the gap at the top?? There is also a gap on the inside prongs as well, but they are on the bottom of those prongs. Any ideas??
There is no explanation in the instructions.
Mark_ms
GregH
08-27-07, 01:21 PM
The gap allows you to clear the edge of whatever you are measuring in case there is a slight lip.
Mark_MS
08-29-07, 12:08 AM
Thanks Greg that might make sense sort of, but if the lip is too large you need to measure your product another way, the gap that is on the prongs where you measure inside diameters disappears as soon as you open calipers so the lip theory disappears also.
Where I work we measure 100-200 times a day, even my supervisor doesn't know and he has been working with metal(s) for decades.
Mark_ms
Where I work we measure 100-200 times a day, even my supervisor doesn't know and he has been working with metal(s) for decades.
Mark_ms
GregH
08-29-07, 04:39 PM
Could be for a special purpose but is hard to say without seeing it.
A photo posted on a site like Photo Bucket would help.
A photo posted on a site like Photo Bucket would help.
nap
08-29-07, 05:37 PM
does this pic show what you are speaking of?
http://phoenix.phys.clemson.edu/labs/cupol/vernier/caliper.gif
I had found a few pics that did not have those relief cuts, but very few. Not really sure why they are there either.
http://phoenix.phys.clemson.edu/labs/cupol/vernier/caliper.gif
I had found a few pics that did not have those relief cuts, but very few. Not really sure why they are there either.
AxlMyk
08-29-07, 07:37 PM
I repaired precision tools for 20 years and never ran across what you describe..
Can you post a photo of it?
Can you post a photo of it?
nap
08-29-07, 08:00 PM
I repaired precision tools for 20 years and never ran across what you describe..
Can you post a photo of it?
I believe he is talking about the cut back section on the outside measurment jaws. If you go to the link I have in my post, you can see what I think it is. OP hasn't been back to confirm or deny that is what he is speaking of but it sounds like it to me.
Can you post a photo of it?
I believe he is talking about the cut back section on the outside measurment jaws. If you go to the link I have in my post, you can see what I think it is. OP hasn't been back to confirm or deny that is what he is speaking of but it sounds like it to me.
Mark_MS
08-29-07, 11:36 PM
Nap in your link you can see a "cutout" on the left hand side of the prongs for the outside measuring. But you cannot see it in the top prongs (inside measurement) because they are open if closed there would be a gap.
In other words yes that is what I am talking about.
The gap on mine is .025 on the outside prongs and .009 on the top
Is this one of lifes little mysteries??
Mark_ms
In other words yes that is what I am talking about.
The gap on mine is .025 on the outside prongs and .009 on the top
Is this one of lifes little mysteries??
Mark_ms
GWIZ
08-30-07, 02:02 AM
I'm not sure of what your talking about.
The under cuts are there because its difficult/costly to cut a 90º corner with a grinding wheel and guarantee your not going to have a fillet in the corner.
The under cuts remove the fillets and any error that would come up if you were to slide a part to the shoulder.
The under cuts are there because its difficult/costly to cut a 90º corner with a grinding wheel and guarantee your not going to have a fillet in the corner.
The under cuts remove the fillets and any error that would come up if you were to slide a part to the shoulder.
AxlMyk
08-30-07, 02:52 PM
Those gaps are there not only for manufacturing purposes, but so you can measure an object that may have a small "lip" on it.. Such as the inside of an engine cylinder with a wear lip on the inside..
Mark_MS
08-31-07, 09:48 AM
AxlMyk,
When I read your first post regarding a "lip" I interpeted the post in relation as to how and what I measure.
Your second post finally hit home when you provided a specific example...I am a bit slow sometimes.......
Thanx I do believe that is the answer I was looking for.
Mark_ms
When I read your first post regarding a "lip" I interpeted the post in relation as to how and what I measure.
Your second post finally hit home when you provided a specific example...I am a bit slow sometimes.......
Thanx I do believe that is the answer I was looking for.
Mark_ms