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true position

true position

true position

good morning, every one!
I went to a job interview last Friday, They gave me a micrometer and a regular solid tube and they asked me to measured the true position. I told them I was not prepare for something like that and Of course I was not consider for the position.
Can some one explained me how to calculate a true position on a situation like that.

RE: true position

Position relative to what?

"Know the rules well, so you can break them effectively."
-Dalai Lama XIV

RE: true position

I don't know, is kind of frustrating, I asked if he can provide me with a drawing, I was hoping to find some basic dimensions or any other help full information, but he said he only need to see how I will calculate a true position on a part like that.

RE: true position


This sound like a 'twicky qwestion' that is best discussed in the Drafting Standards, GD&T & Tolerance Analysis forum http://www.eng-tips.com/threadminder.cfm?pid=1103

Regards, Wil Taylor

o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]

RE: true position

Thank you, all for your help!

RE: true position

I think it was a quick test to determine how confident you were in your knowledge of GD&T. If you immediately came back with "You can't measure the true position of a tube using only a micrometer" you may have been considered for the position.

Chris Wilson
Engineering Services Manager

Certified SolidWorks Professional
Certified Enterprise PDM Administrator

RE: true position

Depending on how badly I wanted the job I would have said "I define the origin of the coordinate system as the corner of the desk, and the X axis of the coordinates joins the tube to the origin. The true position of the tube is (however many) micrometer lengths +/-1 from the origin, along the X axis", using the micrometer as a standard of length.

Or, "No, I don't know how to do that, could you show me the answer please?" And then find fault with their approach.

Trick questions in interviews are a lousy idea.


Greg Locock

New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

RE: true position

or "what is true, or truth? Truth exists with respect to a reference (or datum if you will); for example, my truth is different to yours as we interpret our surroundings based on our different life experience."

another day in paradise, or is paradise one day closer ?

RE: true position

It may have been as simple as checking to see if the Micrometer measured zero before you started to measure.
A favorite trick of HR types yeas ago, was to hand an applicant a micrometer that did not zero, and ask them for the exact dimension of a measured object.
It would also appear that English is not the first language of the OP.

You are judged not by what you know, but by what you can do.

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