Review - Cheapest Micrometer money can buy ?

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old4570
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Review - Cheapest Micrometer money can buy ?

Quite possibly the cheapest micrometer money can buy !
Metric – 0 to 25mm ( analog )

Operation is a little on the rough side ( not the smoothest in operation ) ..
I did some cleaning and oiling and the micrometer is a lot smoother now .
For the princely sum of $8.76 ( Ozzi bananas ) I just did not know what to expect .
Since I recently acquired a 25mm gauge ( 24.995mm ) , I did a quick check to see how bad the accuracy might be ..
I figure if its going to be out , it will most likely show at the end of the measuring spectrum .. ( The further from 0 the greater the error ? )

My Mitutoyo digital micrometer say’s 24.995 mm and the cheap as a McDona;ds take away order Micrometer say’s ….. 25.005mm .. That is + 0.01mm @ 25mm against the Mitutoyo …

The Mitutoyo set me back a weeks wages several decades ago , and the Cheap as Maca’s Chinese Micrometer was $8.76 Ozzi … ( $6.62 USD )

The Cheap as chips micrometer was very repeatable ( got the same measurement time and time again )

The only problem is the lack of smoothness ..
The one thing a micrometer has to be besides accurate is smooth ( to get repeatable measurements ) ..
And that is where these fail some what ..
If you are an experienced hand at using Micrometers , then it may not be an issue for you ..
But if you are not really adept at picking up on problems with measuring , then this particular sample might be problematic ..

The 0.01mm variance against the Mitutoyo @ 25mm is neither here nor there .. It is an acceptable variance for the tools tolerance . If you need a certified Micrometer , you would not be buying the cheapest micrometer money can buy ? ( Would you ? ) But for the hobbyist , these are probably accurate enough .. ( Just depends on those nasty variables ) And if you have never owned a decent measuring tool , then these might be good to learn with .. ( Who can’t afford $6.62 USD )

I certainly did not buy these to replace my Mitutoyo , but I was very interested in seeing what you got for your maca’s money !

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

Edited by: old4570 on 04/04/2017 - 11:00
djozz
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Cool! The way this micrometer is made looks very traditional, if the steel used is not too shabby it may last quite well. Do you feel any play when screwing in and out? That would be much worse than lack of smoothness.

old4570
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No , no play …
In that regard they are good ..

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

Andybibbville
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It should have come with a wrench to adjust it, to make it read the correct measurement.

John 12:46 “I have come into the world as a light, so that no one who believes in me should stay in darkness.” Genesis 1:3 And God said, “Let there be light,” and there was light.
old4570
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Andybibbville wrote:
It should have come with a wrench to adjust it, to make it read the correct measurement.

It does come with a wrench , and the micrometer was zeroed …
( Kind of a given that one zero’s a micrometer = Ok I didn’t mention I did that , I guess its such a no brain’er I didn’t think it needed mentioning )

( Note to self )

So …..

I got the Micrometer in the mail ..
It had a light covering of grease or heavy oil which I removed ( also pulling the micrometer apart )

I then played with it a little to see how smooth it were , if there was any play etc ,,
I noted some roughness when turning it .. Otherwise it was good .
So once again pulled it apart for cleaning and some light oil ..
It were smoother now .

At this point I zero’ed the micrometer , after a few adjustments and some playing with it I got a very nice zero going ..
Now a micrometer is simply two parts threaded together ..
So any inaccuracy built into the tool should show at the end of its measuring capability ( furthest away from zero )

Comparing against the mitutoyo , the cheap micrometer was + 0.01mm
24.995mm ( mitutoyo ) VS 25.005mm ( Cheap analog )

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….