Benzine
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| posted on 19/4/18 at 06:51 PM |
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quote:
Originally posted by JonBowden
for my use, I have now banned anything that says Silverline on it.
Likewise. Worst ratchet straps I've ever used.
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mcerd1
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| posted on 19/4/18 at 07:38 PM |
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they really do look quite poor  there is no excuse for the scales being noticeably off on any precision tool IMHO
[rant mode on] Also I've always had an issue with calling all the digital ones "digital vernier calipers" - they are just
'digital calipers'
it can only be a vernier if its got an actual vernier scale on it !  (vernier scales are on lots of things not just calipers)
also while were at it cm should be banned from all proper measuring devices, the main sale on that one should read 10, 20, 30 etc.. not 1, 2,
3....
the only acceptable metric units for any kind of engineering are nm, µm, mm, m or km !!!
(and don't get me started on deci meters and deca Newtons - French engineers seem to love them, but all they do is cause errors )
[rant over...]
Personally I've still got a dial caliper that I got for my 21st - a bit more expensive than a vernier but much faster / easier to read 
lastly for those that don't know about the vernier scales:
https://en.wikipedia.org/wiki/Vernier_scale
and this ones not too bad: (most videos seem to be for the imperial versions, same idea but why make it more conffusing)
https://www.youtube.com/watch?v=vkPlzmalvN4
the only way to get good at reading them is lots of practice 
[Edited on 19/4/2018 by mcerd1]
[Edited on 19/4/2018 by mcerd1]
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mcerd1
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| posted on 19/4/18 at 07:49 PM |
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quote:
Originally posted by nick205
"BSW"
Not heard of that for a while!
Machine shop I worked in 20 years ago had a dusty set of BSW taps and dies.
We still use new BSW bolts on structures at least a few times a month....
nobody wants the hassle of remaking the whole thing when they don't have to, so repairs, upgrades and replacements on old ones are still done
with imperial bolts 
(and I really mean imperial, none of those american UNC bolts here thank you very much  )
[Edited on 19/4/2018 by mcerd1]
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907
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| posted on 19/4/18 at 08:24 PM |
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My lathe and my guillotine have BSW bolts.
Because of their larger head they are especially good for slotted holes.
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sdh2903
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| posted on 19/4/18 at 09:44 PM |
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quote:
only acceptable metric units for any kind of engineering are nm, µm, mm, m or km
Try telling that to anyone in the aerospace industry.
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907
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| posted on 20/4/18 at 02:30 PM |
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Apparently when you are little you can only see big things, hence at school they teach centimetres as the smallest measurement.
Having had this brainwashed into you for a quarter of your life its difficult to escape, which is why we as a nation can't make anything
anymore.
Even the manufacturing that does exist has to be owned and run by foreigners. Sad init.
Paul G
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