reading a dial caliper

[LittleBill21]

I feel almost embarrassed to ask this, but I need to confirm my numbers are correct.

in the photo is this approximately 47.62 mm?, its saddening, since I use a metric digital one a ton, but people love their old school.

 

[ptsg]

Dial caliper reads 1.866" or 47.39 mm.

 

[LittleBill21]

Dial caliper reads 1.866" or 47.39 mm.

Thank You.

 

[AWSubie]

I’m reading the dial at 1.9665 which would convert to 49.949mm.

 

[RjCorazza]

Not a machinist, but I read that as 1.8665 inches or 47.41 mm

 

[scootr]

Get a digital caliper - One that will toggle between mm/inches/fractions and be done. lol

 

[LittleBill21]

Get a digital Vermeer - One that will toggle between mm/inches/fractions and be done. lol

yea I do have one, this is a customer sending me a photo...

 

[scootr]

O I C

 

[4570Man]

1.866 or maybe 1.867. Digital caliper batteries dying is kinda a nuisance but the ability to transfer between metric and decimal and sometimes fractions is nice.

 

[LittleBill21]

1.866 or maybe 1.867. Digital caliper batteries dying is kinda a nuisance but the ability to transfer between metric and decimal and sometimes fractions is nice.

I bought one that uses a 2032. Has lasted over a year. and I use it easily 30-40 times a week.

 

[turbo36]

Not a machinist, but I read that as 1.8665 inches or 47.41 mm

Yup! +/- .003 accuracy

 

[4570Man]

Yup! +/- .003 accuracy

It’s honestly probably .010 bigger. If you look close you can see that the right side is being held off because it’s not in the pipe straight.

 

[Beaver Cove Deere]

Get a digital caliper - One that will toggle between mm/inches/fractions and be done. lol

No need.

 

[ROUSTABOUT]

I use a caliper so rusty and old that I don't even try the numbers. I just hold the calipers against a known good measuring tape. But I'm in Arkansas, y'all probably expect that from me.

 

[GeneV]

Not a machinist, but I read that as 1.8665 inches or 47.41 mm

I'm gonna further split hairs here and say the pic was taken at slight angle, hence what appears as 1.8665ish is actually close to 1.8667ish.

 

[LittleBill21]

lol folks I just need to make sure i wasn't off by multitudes, after staring at the dial more I understand it better. we have 3 mm buffer, we don't need it that perfect ty.

 

[oldtimer 66]

I have done a lot of quality work over the years, working with drawings, specifications etc. There is a new geometric symbol being used on drawings now. It was issued by the SAE early this year. So I just want to make every one aware of this addition. It is a tolerance symbol where as the dimension must be right on, with out deviation, perfect, got it. It's called " Dead Nuts " See attached.

 

[scootr]

I have done a lot of quality work over the years, working with drawings, specifications etc. There is a new geometric symbol being used on drawings now. It was issued by the SAE early this year. So I just want to make every one aware of this addition. It is a tolerance symbol where as the dimension must be right on, with out deviation, perfect, got it. It's called " Dead Nuts " See attached.





View attachment 785937

Is that NY DN or AR DN ?

 

[turbo36]

I have done a lot of quality work over the years, working with drawings, specifications etc. There is a new geometric symbol being used on drawings now. It was issued by the SAE early this year. So I just want to make every one aware of this addition. It is a tolerance symbol where as the dimension must be right on, with out deviation, perfect, got it. It's called " Dead Nuts " See attached.





View attachment 785937

I can’t begin to tell you how many times over my career I had a customer ask me “tolerance?” “Can’t you just make it perfect?” My reply was always “sure I can, but each move of the decimal point to the left increases the cost by a factor of 10. How close do you want it?”

 

[GeneV]

lol folks I just need to make sure i wasn't off by multitudes, after staring at the dial more I understand it better. we have 3 mm buffer, we don't need it that perfect ty.

Hwwwat?!! Heresy, I can't even...I bet as a kid, your room was quite messy.