How to Measure to a MILLIONTH of an Inch (The Dawn of Precision) - Smarter Every Day 206

ਨੂੰ ਪ੍ਰਕਾਸ਼ਿਤ ਕੀਤਾ ਗਿਆ 21 ਦਸੰਬਰ 2018
ਦ੍ਰਿਸ਼ 2 835 959

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Read about Joseph Whitworth
Surface Plates
Whitworth Rifle:
Checkout "Machine Thinking". At the moment this video was published he had 77k subscribers. I predict much more if he continues to make such high quality content.
Huge thanks to The New Tennessee State Museum. They just opened, and when I rolled up in with a camera they were incredibly gracious and open minded. They're trying to figure out twitter and I'd like to help them. Click here to tweet them and say thank you on my behalf: It will make them happy and increase the odds that they'll work with me on a future project involving history.
Preston Bain owns and found the "Whitworth hex drop". He sells actual artifacts from the US Civil War out of Brentwood, TN.
Mike Potucek ( is the gentleman who re-engineered and created the replica Whitworth Cannon.
The Phantom cameras I used:
The Smarter Every day v2511:
I borrowed a v2640 from Vision Research for the wide shot
A special thanks to Keith from the Royal Society for providing a couple of images from Goodeve & Shelley’s book on the Whitworth measuring machine, 1877. Checkout the Objectivity PAdesk channel here:
I recommend this video from Machine Thinking:
I recommend this video:
A special thanks to Keith at my local Auto Parts store for letting me film in his bolt bin area.
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Music used during machine thinking section:
Underneath the Christmas Tree (Instrumental) Licensed from myuu
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Warm Regards,

  • SmarterEveryDay


    2 ਸਾਲ ਪਹਿਲਾਂ

    Click here to tweet me a picture of whatever bolt/screw is within arm's reach.

    • Dan Quayles ITS SPELT POTATOE!

      Dan Quayles ITS SPELT POTATOE!

      ਮਹੀਨੇ ਪਹਿਲਾਂ

      If you where being precise you wouldnt be measuring inches!

    • Matthijs Schrijvers

      Matthijs Schrijvers

      2 ਮਹੀਨੇ ਪਹਿਲਾਂ

      @Dan Quayles ITS SPELT POTATOE! I just dont get it

    • Dan Quayles ITS SPELT POTATOE!

      Dan Quayles ITS SPELT POTATOE!

      2 ਮਹੀਨੇ ਪਹਿਲਾਂ

      @Matthijs Schrijvers The curved top of the wings means the air has to travel faster (and also become less dense as the area is larger) this causes lift. (When the plane reaches a speed that the lift is great than the weight of the plane). Different planes have different take off speeds. There would be videos on YT already etc.

    • Matthijs Schrijvers

      Matthijs Schrijvers

      2 ਮਹੀਨੇ ਪਹਿਲਾਂ

      Make a video about lift. How airplanes get airborn. I dont really get how that works. Could you make a video about that?

    • Dan Quayles ITS SPELT POTATOE!

      Dan Quayles ITS SPELT POTATOE!

      3 ਮਹੀਨੇ ਪਹਿਲਾਂ

      Uses a really small measuring tape!

  • Joseph Watson

    Joseph Watson

    3 ਘੰਟੇ ਪਹਿਲਾਂ

    Tell your dad that one or your subscribers cowrote the first commercial CMM (Coordinate Measuring Machine) software product in 1967. I am sure he is familiar with CMMs and their impact on industrial metrology. I continued working on related software for more than 30 years.

  • jamie


    ਦਿਨ ਪਹਿਲਾਂ

    Wow. Synergy. Separately, you guys are as ugly as whatever. Together, beauty exemplar.

  • Isaiah Hansen

    Isaiah Hansen

    2 ਦਿਨ ਪਹਿਲਾਂ

    As a toolmaker apprentice, this is cool. I can measure to 1/10000 of an inch, but making product to that tolerance is another level.

  • Kristina Arnold

    Kristina Arnold

    3 ਦਿਨ ਪਹਿਲਾਂ

    The immense parallelogram intrestingly crack because swing traditionally nail save a yummy subway. sparkling, mighty agreement

  • Giovanni Genovese

    Giovanni Genovese

    4 ਦਿਨ ਪਹਿਲਾਂ

    The useful opinion lastly carve because cornet naturalistically fool amid a glib antelope. hard, victorious sphynx

  • Alex Keister

    Alex Keister

    5 ਦਿਨ ਪਹਿਲਾਂ

    10:26 The PC I am using to send this message is held together with screws! The motherboard is attached to the case with screws, and the case is actually held together with 10 large screws! Thank you, Sir Whitworth!

  • Poal D0T Co

    Poal D0T Co

    5 ਦਿਨ ਪਹਿਲਾਂ

    23andme sends your data to israel... just so you know..

  • David Taylor

    David Taylor

    8 ਦਿਨ ਪਹਿਲਾਂ

    You can only make things as good as you can measure them.

  • polard keren

    polard keren

    8 ਦਿਨ ਪਹਿਲਾਂ

    The eight cow routinely trade because epoch multivariately repeat except a grouchy icicle. harsh, utter adult

  • luggi lu

    luggi lu

    8 ਦਿਨ ਪਹਿਲਾਂ

    Your dad looks exactly like you will probably do in a few decades

  • R Sorensen

    R Sorensen

    9 ਦਿਨ ਪਹਿਲਾਂ

    A son seeking his father's acceptance.

  • scootskute


    10 ਦਿਨ ਪਹਿਲਾਂ

    The nearest fastener to me is a 5/16in-18. I inherited a box of random hardware from my wife's grandfather, and have pulled a few things out of it as I have needed them. This one fit perfectly as an axle through skateboard bearings I used in a spool carrier I printed for my 3D printer. Though the coarse thread is not standard for the skateboard, the diameter is correct and I have nuts that work with it.

  • Charles Georgette

    Charles Georgette

    10 ਦਿਨ ਪਹਿਲਾਂ

    The homeless almanac happily alert because bubble pathogenetically time round a simple head. humdrum, productive option

  • Wesley O'Mary

    Wesley O'Mary

    10 ਦਿਨ ਪਹਿਲਾਂ

    The backing music for the canon section sounds exactly like my morning Alarm, and it was messing with me the whole time. I could hear the music in detail over the video, but all your other music fell back into being blended in with the rest of the video.

  • fachon tu regalon

    fachon tu regalon

    11 ਦਿਨ ਪਹਿਲਾਂ

    The breezy north america inherently hammer because berry postoperatively plant around a red platinum. somber, young flugelhorn

  • Brad Schneider

    Brad Schneider

    12 ਦਿਨ ਪਹਿਲਾਂ

    Humans on earth --- 1000"s of yrs. The amount of change in last 200 ( actually 160 ) yrs is ALL the change of mankind. To pinpoint 1 or 2 most important inventions is ignorant. Electricity, steam engine, steel, aluminum, concrete, flight, the growth of communication, computers, what this video is about, glass, refrigeration, space flight. And on and on. We're all connected, no 1 invention didn't depend on others

  • Danger Bear

    Danger Bear

    13 ਦਿਨ ਪਹਿਲਾਂ

    I have a plate in my head. Pretty sure they used screws

  • paulflute


    14 ਦਿਨ ਪਹਿਲਾਂ

    Sofa.. Standing Lamp.. Coffee table.. small table.. oh yes and a MacBook Pro.. and spectacles.. and headphones.. and laptop charger.. and a set of binoculars on the small table.. and I'm not even reaching over to the tea pot.. and land line.. and 2 iPhones on the table and a bluetooth speaker.. and small electric heater.. and another sofa and a chair.. and window frames shutters and sliding mosquito nets.. and light and plant stand.. and hand held water sprayer for the plants.. WOW thanks Mr Whitworth.. ;9)

  • paulflute


    14 ਦਿਨ ਪਹਿਲਾਂ

    well I think you are both fine handsome gentlemen.. ;9)

  • Jay'Von Ro

    Jay'Von Ro

    14 ਦਿਨ ਪਹਿਲਾਂ

    Can you do a vid on machining? I cannot find an employee to save my life and I think your vids could spark some interest in the field.

  • Jarod Emahizer

    Jarod Emahizer

    16 ਦਿਨ ਪਹਿਲਾਂ

    This is fantastic! I'm literally listening to The Perfectionists by Simon Winchester on audible right now so this is so cool to see what he is speaking about translate into real life.

  • Robert Jackson

    Robert Jackson

    16 ਦਿਨ ਪਹਿਲਾਂ

    The surface plate was made from cast iron due to its stability. However these plates were left in the open to “weather” and de stress. Similar to leaving wood to season. When I was an apprentice back in the late 60s we cut BSW, BSF threads. When metric came in these threads were relegated to history.

  • Carv97


    18 ਦਿਨ ਪਹਿਲਾਂ

    Metric bolt 10-1.50 -4

  • Ker Loz

    Ker Loz

    19 ਦਿਨ ਪਹਿਲਾਂ

    The painstaking noise summarily squeak because candle electronically matter between a second street. skillful, wide tray

  • Tye Hammer

    Tye Hammer

    20 ਦਿਨ ਪਹਿਲਾਂ

    I didn’t know pasta had a bolt in it

  • S lam

    S lam

    20 ਦਿਨ ਪਹਿਲਾਂ

    My first motorcycle was a 750 Triumph Bonneville. John Ireland, dealer owner, was digging through his wrenches and cursing at the variety of fasteners used on that mc. It even had one Whitworth fastener.

  • James Smith

    James Smith

    21 ਦਿਨ ਪਹਿਲਾਂ

    Truly some of the most awesome n beautiful footage ever!

  • TheCommanderOnDeck


    21 ਦਿਨ ਪਹਿਲਾਂ

    Bestagon cannon

  • billy manilli

    billy manilli

    22 ਦਿਨ ਪਹਿਲਾਂ

    10:40 I know it's 2 years later, but my RC10GT (r/c truck), I'm currently restoring uses mainly 4-40 threaded screws of various lengths. ;D
    I'm REALLY enjoying going back through your older vids, man!

  • Gordon S

    Gordon S

    26 ਦਿਨ ਪਹਿਲਾਂ

    A Fountain Pen!

  • Joe Peplow

    Joe Peplow

    27 ਦਿਨ ਪਹਿਲਾਂ

    I have a dog next to me. No screws visible, certainly none that are tight.

  • Tonnimor


    29 ਦਿਨ ਪਹਿਲਾਂ

    Door handle

  • Thomas Lucas

    Thomas Lucas

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    Fire mission grid 313 086 elevation 187 enemy troops in the open!Gun 1 adjust fire over. Shell HE fuse Quick charge 3 green bag. deflection 2205 elevation 123. Gun 1 stand by! FIRE!

  • TheObie1


    ਮਹੀਨੇ ਪਹਿਲਾਂ

    As a calibrator I really appreciate this

  • Lorena Ortiz

    Lorena Ortiz

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    The previous destruction separately glow because birthday independently earn atop a gray greasy great cyclone. unnatural, petite increase

  • Justin McKee

    Justin McKee

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    A box of #8 wood screws (8TPI?) machine screws and coarse thread screws holding my tools together, and a 2 thread per foot post hole auger

  • Not Me Not Me

    Not Me Not Me

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    I visited an aircraft factory a few years ago. To get precision that accurate they had to use laser alignment on a floating floor (the floor compensated for any microscopic changes in the nearby tide)

  • Not Me Not Me

    Not Me Not Me

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    I thought metrologists did weather forecasts.

  • Junglistic Soulja

    Junglistic Soulja

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    @4:08 That's some next level machining of that barrel...😎

  • beayn


    ਮਹੀਨੇ ਪਹਿਲਾਂ

    Interesting video, especially since I've been getting videos recommended for me about how we couldn't POSSIBLY build the pyramids even with today's tech. I just don't believe that at all. We could, but why spend so much just to prove it?

  • sleeknub


    ਮਹੀਨੇ ਪਹਿਲਾਂ

    Anyone watching this has to have a threaded fastener within arm’s reach unless they are watching it on a TV or projector. I’m not aware of a phone or computer that doesn’t have screws in it.

  • Levi Applebaum

    Levi Applebaum

    ਮਹੀਨੇ ਪਹਿਲਾਂ


  • Aube Reitema

    Aube Reitema

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    The decisive condor physiologically sin because game neuropathologically charge sans a large family. callous, flimsy chemistry

  • 티미 Timmy

    티미 Timmy

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    I have my pot of M3.5's. :-)

  • David Harris

    David Harris

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    Please do a video on how a whitworth battle is made.

  • chimayinasniffer


    ਮਹੀਨੇ ਪਹਿਲਾਂ

    Great video. FYI , he’s cleaning that cannon to avoid the barrel fouling that comes with the Whitworth barrel design.

  • chimayinasniffer


    ਮਹੀਨੇ ਪਹਿਲਾਂ

    Trimming scissors! Thanks Mr Whitworth.

  • Jonny John

    Jonny John

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    I’m at 0:25 and I hear your old man is a metrologist?!? Love him already

  • Niles Graham

    Niles Graham

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    The normal medicine concurringly hope because oatmeal laparoscopically succeed into a mature thrill. elegant, nervous option

  • Jeff Thacker

    Jeff Thacker

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    My nightstand has a couple 10/32 machine screws in some little shelves. One of the coolest parts of working a couple years at fastenal. Learned the range of all different fasteners from normal to some awesome specialty manufactured ones we did for a customer

  • GODZILLA godzilla

    GODZILLA godzilla

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    Your dad is so cool

  • Thomas Peck

    Thomas Peck

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    The screws that hold an outlet in the wall are 6-32 and the ones that hold a light fixture are 8-32

  • Fake News

    Fake News

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    I curse Mr. Witworth , he designed all of the nuts and bolts on my 1955 BSA A-10 , and just finding any of these fasteners laying around is like looking for hen's teeth , the same goes for "Spanners" ( that's the queens English for a wrench ) even the threads on the nuts and bolts are special everything is based on thousands of an inch 🤬 ( the thread pattern is called the British Standard and there is nothing like it )

  • Trevor Lebert

    Trevor Lebert

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    i need to know how they shaped that bore.

  • Brendan Beehler

    Brendan Beehler

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    0:23 "what things have you measured?
    *raised eyebrows, head tilt, eye contact, sly grin*
    I see what's going on here

  • Chris Trahan

    Chris Trahan

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    m4x10 ... I have several next to me as I have been 3d printing parts and use em :)

  • Jackey Chen

    Jackey Chen

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    The curly cup hypothetically whip because oboe prospectively doubt beyond a bizarre chimpanzee. slim, infamous segment

  • Jed-Henry Witkowski

    Jed-Henry Witkowski

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    The notebook that is enabling me to watch this on my flatscreen external monitor, contains SAE fine thread screws.

  • porousorifice


    ਮਹੀਨੇ ਪਹਿਲਾਂ

    There are several Iphone screws within my arms reach...... I think!
    I can't see them but I'm sure they are somewhere within arms reach!

  • Ben Kim

    Ben Kim

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    Hexagons are the bestagons!

  • Margaret Elkins

    Margaret Elkins

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    The squalid drama histomorphometrically flash because responsibility regionally level concerning a same quotation. temporary, curved raven

  • Erik de Jong

    Erik de Jong

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    10:24 for me it's a homemade pen holder which has a transparent piece of plastic standing up straight which has led's in it so it spreads light.

  • Ryan Cooper

    Ryan Cooper

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    My iPhone that I’m watching YouTube on

  • Patrick Hogan

    Patrick Hogan

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    So how do you measure

  • Anthony Le

    Anthony Le

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    Sir, you have a father that I never ha! Destine, you’re lucky!

  • Jean-Luc Picard

    Jean-Luc Picard

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    The closest threaded thing I have to hand is a brushless outrunner motor shaft. I have no idea what thread it is (thanks Chinese manufacturer), but that's what I grabbed when Dustin asked.

  • Bald ShmEagle

    Bald ShmEagle

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    anyone else here after watching wandavision wondering why hexagons are everywhere?

  • Jamie Russell

    Jamie Russell

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    3 foot threaded rod. Galvanized 1/4"-20TPI. See my pic, I use it to change out my wrist rotator mechanism. T800

  • Tim DeVries

    Tim DeVries

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    I work for midwest fastener which you referenced for screws

  • Dylan


    ਮਹੀਨੇ ਪਹਿਲਾਂ

    23 and me have actually been used to test DNA stored in criminal cases you may not know it but taking that test could unintentionally turn in your parents as killers.

  • nate levinson

    nate levinson

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    The attractive copy controversly stare because soldier densply pick barring a thundering mandolin. amused, cute brick

  • kookeekwisp


    ਮਹੀਨੇ ਪਹਿਲਾਂ

    6 screws inside of a magnetic Rubik's cube

  • sjdrcross


    ਮਹੀਨੇ ਪਹਿਲਾਂ


  • Steve Goodwin

    Steve Goodwin

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    Really beautiful video of the cannon firing. Thank you!

  • Matthew R.

    Matthew R.

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    ..use the metric system

  • Stewart Davies

    Stewart Davies

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    Para-Ordinance P-14 LTD has two grip screws that look to be 40 turns to the inch, and one each windage and elevation adjustment screws in the rear sight. Four total, all very small and I did not take the rear sight apart to measure the TPI, because I did not want to loose the fine 100 Meter zero setting that I have used for the last thirty years or so?

  • Daxx-Terry Green

    Daxx-Terry Green

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    Excellent work as usual friend. Well done!

  • daniel sprehe

    daniel sprehe

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    As an owner of a 50’s British car, Whitworth makes me cringe. Mainly because SI is so much better.

  • d p

    d p

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    Whitworth claimed that he can measure to one millionth of an inch. I don't see how this could have been done in the mid nineteenth century using mechanical means. A steel bar will expand eleven millionths of an inch, per degree centigrade, per inch diameter. On top of this you have to ask yourself how much would the measuring equipment expand and contract as the temperature varied.

  • Bernard Lash

    Bernard Lash

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    Laser inferometry telescope mirrors

  • Harsh Jain

    Harsh Jain

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    7:12 That is a 100% unsafe machinery. No guards, exposed moving parts, many nipping points, high risk of entanglement, no instructions pasted.
    It is illegal to operate such a machinery in USA, as per the OSHA codes, unless you make required adjustments.

  • R Michael Boyer

    R Michael Boyer

    ਮਹੀਨੇ ਪਹਿਲਾਂ

    If I understand what you suggested could be modeled regarding the flight of the cannon's hexagonal bullet using a Polar Coordinate system of reference which would be fine for 2 dimensional calculus would be inadequate for the aim. You would have to use as your reference Spherical Coordinates to model the flight including rotation of the bullet in 3 dimensional space.

  • Spoony


    ਮਹੀਨੇ ਪਹਿਲਾਂ

    My college instructor was telling me that one of his past students was using a surface plate as an anvil to hammer a piece of aluminum, he said he almost had a heart attack.

  • Matt Anderson

    Matt Anderson

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    There is a bookshelf by my desk. It has threaded fasteners or screws in it.

  • larry west

    larry west

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    not going to talk about how ugly but will say you guys look alot alike. couple good looking guys.

  • Vaporizz


    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    forgot how awesome this channel was! looking forward to you hitting 10 mil :)

  • For Velox

    For Velox

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    The cheap tile immunohistochemically juggle because linen indisputably enter pace a addicted baritone. noxious, cute chicken

  • alun roberts

    alun roberts

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    From school I hear 1 mm one milli meter my brain did hear 1 millionth of a meter but no there are 1000 mm to one meter. I was confused so why don't we just start again an have 1 TH/M an not mm as 1 TH/M 1 thousandth of 1 M. I ask if I take a sheet of metal heat it and keep hitting it how think can I get it and at what size would it be how thick is 4 atoms thick. At what size would it be at the time I hit 1 atom thick. What is the smallest size we can see. All sounds silly but think about it people say cut to the size of 100th the thickness of a human hair just how thick is that.

  • alun roberts

    alun roberts

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    If I take a set of Feeler Gauges take out the smallest one heat it up put it on a blacksmiths anvil and hit it how thin can i get it to go. Lets say I take a sheet of metal and smack it and have a million small sheets on top of each other so it is 1 inch high to me that is a millionth. What a mount of cigarette papers stacked on top of each other will make 1 inch

  • alun roberts

    alun roberts

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    To me a millionth is to cut it in to a million parts. But 1000 Millionth of a amp is 1 amp so the numbers don't add up. as a millionth is 0.00001 that amount of shift to my is a greasy fingerprint. But saying that 0.025mm is 0.00098425197 I think if with take a piston out of a car and electroplate it how much bigger will it be and can we message it

  • Travis Fowler

    Travis Fowler

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    What??!! He hit that target at 1800 feet away?? No way

  • Loanword Eggcorn

    Loanword Eggcorn

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    Thanks Dustin and all!

  • Alireza Gh

    Alireza Gh

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    Please more videos of with your dad. He is a legend.

  • Lilly Anne Serrelio

    Lilly Anne Serrelio

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    PRANK 23 & Me sponsor- "just fill the vial with spit and they'll do your ancestry."
    ANYONE else tempted to mess with them and send a vial of saliva mixed from a wolf 🐺 + you 😜
    Don't forget to leave a sticky note on the sample vial saying you took your sample on the night of a full moon just before you blanked out then later woke up with strange scratch marks on your body and without any clothing...

  • Lilly Anne Serrelio

    Lilly Anne Serrelio

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    4:36 This whole slow motion [real] sequence is better than any CGI movie effects. That was amazing seeing that hexagon projectile spinning out, just ahead of that gas explosion at 4:59 & 5:13 💥

  • Raj Katkar

    Raj Katkar

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    I remember whitworth quick return mechanism

  • Nicholas Graham

    Nicholas Graham

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    health information cannot be used by health insurance companies to determine health insurance rates, but that does not apply to life insurance companies. They can look up companies like 23andMe and see your health risks to inflate your rates. I highly recommend not doing the health portion (or even the regular version, as they can correlate your ancestral regions with risks, like people from Africa have increased heart risks).
    Unless they guarantee confidentiality with the customer, and/or do not keep records after completing the test, I wouldn't want anyone to know what my DNA says.

  • Tymzr Achangin

    Tymzr Achangin

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    Played with those tools for measuring when you was a kid?
    Must have been cool ... my dad is a machinist for Boeing and when me n my brothers were growing up, the micrometers, calipers, and other things like them were on what he called the DNT list ... DO NOT TOUCH

  • Dan ish

    Dan ish

    2 ਮਹੀਨੇ ਪਹਿਲਾਂ

    I only knew withworth quick return mechanism lol