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Thread: Seating depth - who bothers?

  1. #16
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    interesting.sooooo much to learn about reloading

  2. #17
    Lovin Facebook for hunters kiwijames's Avatar
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    Quote Originally Posted by Cyclist View Post
    NZ went metric in 1976 as far as I know? Are people REALLY measuring everything in inches or just saying what they hear on US forums?
    Ive never caught a 4.6kg trout, I still stand 6'1" in my socks and prefer it if you're pouring from a 40oz bottle.
    Spanners, P38, R93 and 1 others like this.

  3. #18
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    Quote Originally Posted by Cyclist View Post
    "the Speights school of advanced ballistic research"

    I always recon the whole "few thou" or "40 thou" thing is interesting, NZ went metric in 1976 as far as I know? Are people REALLY measuring everything in inches or just saying what they hear on US forums?
    Cyclist
    As an engineer who has lived through the imperial/metric swap over I find myself stuck between two worlds.

    I'm completely at home with inches/mm PSI/Bar FtLbs/Nm etc ... lots of toolroom machinery in NZ especially lathes/mills and surface grinders are still calibrated in inches, some of the older press tooling and injection dies were manufactured to imperial drawings and when they need repair you work from those drawings.
    We still stock metric and impreial drills, Taps, dies, cutters, dowels, cap screws etc.

    When it comes to money however I'm lost in the imperial world and think only in metric .... I guess thats because my first pay packet was in dollars and cents and has been ever since.

    You can still by bar stock, bearings and seals in both imperial & metric sizes.

    When measuring with a Very Near I still read off the imperial scale first and have both imperial and metric micrometers in my tool box and use which ever is appropriate to what ever the scale is calibrated in the machine I'm using at the time.

    So to answer your question, Yes some people still work and measure in the imperial scale.

    Cheers
    Pete

  4. #19
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    Yep - but I never heard anybody talking about thou till reloading? small stuff on engines like valve clearances, bearing crush, points etc is metric (or at least I always did it in metric...) the lathe is metric, the mill is metric. I cant think of any other area where small measurements are commonly made in thou off the top of my head??

    Hmm - post appears above as im slowly typing... So engineers are still using it which is interesting. Still there are plenty of posts from people who are obviously not engineers and are far too young to know what the other side of the ruler is for. Tis a funny old world!

  5. #20
    Official Cheese Shaman Spanners's Avatar
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    Seating depth - who bothers?

    I built all motors in thou at the shop

  6. #21
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    Quote Originally Posted by kiwijames View Post
    Ive never caught a 4.6kg trout, I still stand 6'1" in my socks and prefer it if you're pouring from a 40oz bottle.
    Especially if it's a single malt

  7. #22
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    Time's have changed then becuase we have bead callipers from italy that measure down to 0.01mm only still in mills, i guess in imperial you can go a little less and give it a number its only alloy joinery so we dont need thou's

  8. #23
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    Quote Originally Posted by Spanners View Post
    I built all motors in thou at the shop
    why though? is it what you learnt from the old man or are they teaching it at tech?

    I guess I just got it all in metric from the old boy and thats what we did - he would have been firmly from the Whitworth and Long Tons days!

  9. #24
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    Seating depth - who bothers?

    Quote Originally Posted by Neckshot View Post
    Time's have changed then becuase we have bead callipers from italy that measure down to 0.01mm only still in mills, i guess in imperial you can go a little less and give it a number its only alloy joinery so we dont need thou's
    0.01mm is less than 1/2 a thou (0.000394") so you're pretty tight tolerance there anyway.
    The range of what we think and do is limited by what we fail to notice. And because we fail to notice that we fail to notice, there is little we can do to change; until we notice how failing to notice shapes our thoughts and deeds

  10. #25
    Almost literate. veitnamcam's Avatar
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    A tho of an inch is bigger than 0.01mm
    "Hunting and fishing" fucking over licenced firearms owners since ages ago.

    308Win One chambering to rule them all.

  11. #26
    Official Cheese Shaman Spanners's Avatar
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    Seating depth - who bothers?

    That's just how you do it lol
    Engineering is different. You USE it daily. A normal world person prob wouldn't

  12. #27
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    Seating depth - who bothers?

    We rebuild a bunch of American and English equipment where the manual specs are imperial (thou). Getting less and less now though.
    The range of what we think and do is limited by what we fail to notice. And because we fail to notice that we fail to notice, there is little we can do to change; until we notice how failing to notice shapes our thoughts and deeds

  13. #28
    Official Cheese Shaman Spanners's Avatar
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    Seating depth - who bothers?

    1 Thou is 0.025mm approx

  14. #29
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    The best one i have heard of is the "Mars climate orbiter" project which crashed and burnt - it was a joint project and one team was using metric, the other team imperial, neither bothered to check the other teams numbers... oops!

  15. #30
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    in that case we use small incriments but we only use metric to do it if thats the pointim no genius

 

 

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