Profile question

so. If i have a callout Profile .010. No datums.

Does that mean that I will not have min and max? Since the surface has no basics and can shift in any direction???

so in another words when i measure it, i would only get one value, example .005 and total profile .010?

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bfire85 over 6 years ago

You will still have a min and max, they will just be equally dispersed. So if you have a profile measurement of 0.010, your min will be -0.005 and your max will be 0.005, for example.
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WolfMan over 6 years ago in reply to bfire85

Here is what i don’t understand, if you you dont have a datum, which means that there is no actual nominal distance of any kind, there for the profile can be anywhere even an inch from the nom, as long as the profile is good to itself . Unless i am not understanding this correctly and regardless of whether there is a datum or not, the profile is still evaluated in both directions from the nominal.

Junkie, if it was flat yes, but what if the surface is nit flat, its a curve or a radius.
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WolfMan over 6 years ago in reply to bfire85

Here is what i don’t understand, if you you dont have a datum, which means that there is no actual nominal distance of any kind, there for the profile can be anywhere even an inch from the nom, as long as the profile is good to itself . Unless i am not understanding this correctly and regardless of whether there is a datum or not, the profile is still evaluated in both directions from the nominal.

Junkie, if it was flat yes, but what if the surface is nit flat, its a curve or a radius.
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