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Thread: Anyone know what this piece of equipment is called?

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    Gold Member Marcos's Avatar
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    Anyone know what this piece of equipment is called?

    we used it to measure the deflection of the beams, it measures tiny distances. (the dial thing)



    totally forgot to write down the name

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    A really big calliper?
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    Filthy old man noTHINGface's Avatar
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    micrometer?
    What we share with everyone is glum, and dark...

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    Does he need a reason? Funkstar's Avatar
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    strain gauge?

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    Gold Member Marcos's Avatar
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    Quote Originally Posted by noTHINGface View Post
    micrometer?
    i thought this was a micrometer?



    or maybe its just another type of

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    that is definately one sort of micrometer marcus... but not to sure whether the top one is! could well be tho

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    Does he need a reason? Funkstar's Avatar
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    We call these micrometers

    to me your one looks like something for checking ovality or a kind of caliper

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    Gold Member Marcos's Avatar
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    Quote Originally Posted by Funkstar View Post
    strain gauge?
    i suppose it is a form of strain,

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    Gold Member Marcos's Avatar
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    Quote Originally Posted by Funkstar View Post

    We call these micrometers

    to me your one looks like something for checking ovality or a kind of caliper
    i think i'll go with micrometer, it does measure micro distances after all

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    Entangled Lee`'s Avatar
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    interferometer? The one where you split a beam, and vary the distance one travels and then look to see if the 2 beams join back up and create coherent or decoheret interference. Knowing that each time you go from coherent - coherent you have changed the path length of the beam by lamda.

    Used to measure tiny tiny distances, on the scale of nm.
    Last edited by Lee`; 12-01-2007 at 07:19 PM.

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    Marcos. The name for the dialed tool is a DTI (Dial Test Indicator) I've used one to put on a shaft as it is spinning on a lathe to see if it is running true.

    http://en.wikipedia.org/wiki/Dial_indicator

    Hope this helps.

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    Now with added sobriety Rave's Avatar
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    I didn't learn much from my engineering course (which is why I got booted out) but I do know that a strain guage is a strip of metal that's glued onto the component under strain- as it's stretched its resistance changes, allowing you to measure the amount of strain the component it under. That is not a strain gauge.

    http://en.wikipedia.org/wiki/Strain_gauge

    I always just called those things dial gauges, although I daresay DannagE has it right.

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    There was one of these appear at work the other day for checking a rotor on a motor. I'll grab the box if its still there, but I am pretty sure its a DTI
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    Grumpy and VERY old :( g8ina's Avatar
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    When I was working, I sold load cells, lumps of steel with SGs fitted for measuring force or load.

    I also sold LVDTs, or displacement transducers, for measuring distance. The DTI usually measures distance, but can be used to measure force too - the two items are similar in principle, but totally different in the actual way they are constructed.

    http://www.rdpe.com/uk/men-hiw.htm
    has a lot of useful info on load and displacement (one of my old companies)

    More at my last firms site :
    http://www.novatechuk.demon.co.uk/e000.html

    (I wrote some of those )

    hth
    Cheers, David



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    . bledd's Avatar
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    usually used for bling purposes..


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    Its a deflectabeamamommeter

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