What is the difference between a Datum and a Datum Feature? a) A Datum and Datum Feature are synonymous. b) A Datum is theoretical, a Datum Feature is real. c) A Datum is a feature of size, and a Datum Feature is a surface feature. d) A Datum Feature is theoretical, and a Datum is real.

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arjunrv arjunrv · Answer 1 · 2020-03-20T06:00:47+01:00

Difference between Datum and Datum feature is 'Datum is theoretical and Datum feature is real'.

Option: (b)

Explanation:

A Datum is a perfect plane, line, point or surface but only occurs theoretically.

However a Datum Feature is fully based on a tangible surface, axis or point on a part where that theoretical datum is located.

The reason behind in this is they are not equal to each other because the 'part surface' is never 100% perfect.

The important functional features of the Datum is controlled during measurements.

andromache andromache · Answer 2 · 2021-12-31T13:09:03+01:00

The difference between Datum and Datum feature is Option b 'Datum is theoretical and Datum feature is real'.

The following information should be considered:

A Datum should be the perfect plane, line, point or surface but only occurs theoretically.
However a Datum Feature is fully based on a tangible surface, axis or point on a part where that theoretical datum is located.
The reason behind in this is they are not equal to each other because the 'part surface' is never 100% perfect.
The important functional features of the Datum is to controlled during measurements.

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