tegwin
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| posted on 24/11/09 at 09:34 AM |
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Where to get precision measuring equipment
I have been asked what I want for Christmas..
As I dont really have any idea I thought I would ask for some precision measuring equipment..
Some micrometers, depth guage, decent vernier etc...
Obviously these are reatviely expensive so I have no idea how many people will be willing to buy me....
However, can anyone suggest what size micrometer etc I should be looking at,
What brand is going to be good and well made?
And where is best to get them?
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Would the last person who leaves the country please switch off the lights and close the door!
www.verticalhorizonsmedia.tv
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flak monkey
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| posted on 24/11/09 at 09:45 AM |
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Mitutoyo make some of the best measuring equipment that will last a home user forever. Kennedy also make some good stuff as do Moore and Wright.
Mics come in 25mm increments, 0-25 and 25-50 is are the most useful.
Any vernier will have a depth gauge on which will be more than good enough for most jobs. You can get depth mics as well, again in 25mm increment.
I would avoid buying secondhand if you want it to be accurate
Sera
http://www.motosera.com
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02GF74
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| posted on 24/11/09 at 09:46 AM |
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quote:
Originally posted by tegwin
Some micrometers, depth guage, decent vernier etc...
However, can anyone suggest what size micrometer etc I should be looking at,
Machine mart - the micrometer and dial gauge looks ok and work well.
Maplins have on special offer ever once in a wile a digital verier - nice to have but useless if batteries go. I have one and may even have a gigital
micrometer but use the manual ones as they are quicker and do not rely on batteries.
0-25 mm micro and 25-50 mm .
Add to you list a set of steel rules: 159 mm, 300 mm and 1 m
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tegwin
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| posted on 24/11/09 at 10:01 AM |
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Was going to ask where to get them, bt the Mitutoyo website uk seems to sell them direct..
Now all I have to do is decide if I want a friction stop or a ratchet stop... Anyone care to suggest which one is most consistent and reliable?
When I did my machine training most of the ratchet heads had been snapped off or didnt work anway....
[Edited on 24/11/09 by tegwin]
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Would the last person who leaves the country please switch off the lights and close the door!
www.verticalhorizonsmedia.tv
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SteveWalker
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| posted on 24/11/09 at 12:21 PM |
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quote:
Originally posted by 02GF74
Maplins have on special offer ever once in a wile a digital verier - nice to have but useless if batteries go. I have one and may even have a gigital
micrometer but use the manual ones as they are quicker and do not rely on batteries.
From experience the Maplin digital verniers eat batteries and are frequently dead when you need them, whereas the Mitutoyo's will run for years
at a time on the same batteries and give decent warning of needing replacement.
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RAYLEE29
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| posted on 24/11/09 at 12:38 PM |
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Its more about feel in reality as if you do a ratchet or friction quickly it will show a smaller size than if you go slowly
mind you were only talking tenths of a thou so just how accurate do you need to be?
also remember they are only correct if set to a standard at 20 degrees c and use at the same but again only talking tenths of a thou
Ray
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David Jenkins
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| posted on 24/11/09 at 12:41 PM |
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My Mitutoyo vernier is now approaching 20 years old, and has worked consistently well. Only needed 3 or 4 batteries in all that time (common hearing
aid cells).
As a comparison with the cheapy ones, the stated battery life on mine is something like 12 months if you're good at turning it off when not
using it, or 6 months if you leave it on!
This matches my own experience.
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Mal
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| posted on 24/11/09 at 12:42 PM |
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I have used with company before:
H Roberts Metrology
www.hroberts-di.com
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Marcus
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| posted on 24/11/09 at 12:47 PM |
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If you look on the Cromwell tool swebsite, they usually have special offers on measuring stuff. IMO avoid the Oxford scientific stuff, it's a
bit cheap. Mitutoyo is the way forward, although cromwells own kennedy verniers are rebadged Mitutoyo.
Marcus
Because kits are for girls!!
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