How To Use A Tachymeter On A Watch

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  • čas přidán 8. 07. 2024
  • Many of my viewers have asked me how to use a tachymeter scale on a chronograph watch
    I give 5 examples in this video to demonstrate that anyone can use this effective tool in everyday life.
    Feel free to leave your comments and input
    cheers
    00:00 Intro
    00:48 Definitions
    02:41 Example 1 Constant Speed
    04:40 Example 2 Average Speed
    06:04 Example 3 Distance
    09:07 Example 4 Hamburgers
    10:16 Example 5 Speed
    11:15 Summary
  • Jak na to + styl

Komentáře • 873

  • @nickmcfarland6822
    @nickmcfarland6822 Před 9 měsíci +18

    As an American, I was lost on Km/h, but once the hamburger analogy came out, I was in.

  • @avrankulj
    @avrankulj Před 3 lety +837

    I feel bad for the kid having his hamburger timed by a boss wearing an Omega

    • @PeterKotsa
      @PeterKotsa  Před 3 lety +75

      Haha..that kid needs to get his act together 😂

    • @sstewart82ss
      @sstewart82ss Před 2 lety +9

      😂

    • @robinrobson5363
      @robinrobson5363 Před 2 lety +12

      Get a Breitling! If one desires to own a chronograph one should own a chronograph by a company devoted to chronograph movements years ahead of other watch companies. Breitling, instruments for professionals.

    • @vilhamdutch2962
      @vilhamdutch2962 Před 2 lety +1

      My thoughts exactly

    • @kkrsnn5632
      @kkrsnn5632 Před rokem +11

      That's why the boss is boss and he has an Omega 😜

  • @samsonstaats3851
    @samsonstaats3851 Před 3 lety +648

    On behalf of everyone who’s seen this, thank you for such a descriptive and easy explanation of an awesome tool.

    • @PeterKotsa
      @PeterKotsa  Před 3 lety +18

      My pleasure
      cheers

    • @mwendwamunene538
      @mwendwamunene538 Před 3 lety +8

      Brilliant explanation of how to use a tachymeter. This video has motivated me to get myself such a watch. Kudos

    • @omerozyer9061
      @omerozyer9061 Před 2 lety

      Thank you for this useful and beneficial video regarding tachymeter. There is only one thing;
      To complete 1 mile distance in 28 seconds, our speed will be 128 miles/hour not 128km/hr.

    • @jerichowatches1
      @jerichowatches1 Před rokem

      Yeah I've just bought a Pagati moon watch so very helpful 🙂

    • @JasonFisk
      @JasonFisk Před rokem

      What he said. I've had Tachymeters on watches for years, thought they looked cool, never knew how to use it. Until now. Thanks, man.

  • @Bob.martens
    @Bob.martens Před 3 lety +311

    Tachymeters went the way of the divewatch: many people own them, professionals stopped using them decades ago, and not that many people actually still know what they really used to be for.

    • @PeterKotsa
      @PeterKotsa  Před 3 lety +40

      I agree, most of my friends don’t know how to use them either 🤔

    • @robinrobson5363
      @robinrobson5363 Před 2 lety +5

      Oh, well do not tell Formula 1 or the pilot's association!

    • @heathwasson7811
      @heathwasson7811 Před 2 lety +38

      @@robinrobson5363 Pilot here... and AOPA member. No matter how well we my like the style, none of us actually use any pilot watch functions for anything other than basic time telling in the cockpit. GMT is about the only useful thing for pilots, assuming you're traveling international a lot. I actually use a chono and diver's bezel a lot, but mostly in the gym timing sets, or the kitchen when I've got multiple things going on the stove.

    • @vaggelisdogas
      @vaggelisdogas Před 2 lety +13

      Well the divewatch function can be somewhat useful on a daily basis if for some reason you dont have a timer available,such as exams.

    • @vaggelisdogas
      @vaggelisdogas Před 2 lety +3

      @@heathwasson7811 And assuming that the GMT function is actually easy to use because some GMTs are kinda of a headache to remember how to read them

  • @BadGuyDennis
    @BadGuyDennis Před 2 lety +227

    Tachymeter can also be used as a pulsometer with some conversion.
    Once you feel a pulse, you start the chronograph function.
    Count for 30 pulses (the starting one count as zero).
    Then stop the chronograph.
    By dividing the tachymeter reading by 2, the result is pulses per minute.

    • @PeterKotsa
      @PeterKotsa  Před 2 lety +14

      👍

    • @UNSCPILOT
      @UNSCPILOT Před 2 lety +7

      A good multiperpous function to be certain, low tech, but effective

    • @Mikesmeyer88
      @Mikesmeyer88 Před 2 lety +15

      Great now I have to buy one, even though my phone can do that.

    • @ahsanabir2902
      @ahsanabir2902 Před rokem +1

      How stupid can you be !! you have counted beats for 30 seconds, just multiply by 2 , and you get beats per minute.Useless fellow .

    • @gilean6179
      @gilean6179 Před rokem +33

      you just need a second hand...count the pulse for 6 seconds and multiply by 10; that is it. did that for several years in med school...unless you are instructed to take the full minute on certain medical conditions.

  • @JO-vs5bx
    @JO-vs5bx Před 8 měsíci +6

    I am a veterinarian and I use this to measure the pulse of several animals. amazing tool

  • @benmurray1902
    @benmurray1902 Před rokem +11

    Been staring at my Seiko with the Tachymeter wondering, "How the heck to work this ?"
    This video makes me stop staring blankly and increase my staring productivity on my watch!!

  • @michaelcorvin4330
    @michaelcorvin4330 Před rokem +46

    Also works on distances longer than 1. Multiply the timed result by the track distance. Example: Daytona International Speedway's oval course is 2.5 miles. If a car completes one lap in 45 seconds, the result would be 80. 80 x 2.5 = 200mph average speed.

    • @markymarknj
      @markymarknj Před rokem +3

      THANK YOU!

    • @romrig4648
      @romrig4648 Před rokem +1

      How is that any better than Distance divided by time? Tachymeter is designed to show the speed you go at with a single look, not to do math :/

    • @michaelcorvin4330
      @michaelcorvin4330 Před rokem +3

      @@romrig4648 I was simply pointing out courses over one mile, kilometer, or whatever metric you are using. Plus, the tachymeter shortens the equation from distance/time X 3600 in those longer than one situations.

    • @yoyoezzijr
      @yoyoezzijr Před 10 měsíci

      Yeah, because speed = distance/time. tachymeter scale = 1/time (in hours)
      So distance x scale = distance / time (per hour)

  • @Royal_BLT
    @Royal_BLT Před 18 dny +3

    🇨🇦 Mine is a 1972 Seiko Automatic Chronograph with a 'Pepsi' fixed bezel outside and an adjustable internal bezel ! Works perfectly, still stylish, self-winding and still totally accurate ! 🇨🇦

  • @baba.mkhulu
    @baba.mkhulu Před rokem +3

    over the last 50 years...& with all the chronos i've owned...i thought it was some gadget for divers that just looked cool. so i learned something new today. 🙏🏽

  • @dfb1976
    @dfb1976 Před 24 dny +1

    Wore these in my teens and 20s never knew what they are for. Just found it cool to show off.

  • @martinkaloki2677
    @martinkaloki2677 Před 9 měsíci +8

    This is brilliant! The explanation is so simple yet it still hits home.

  • @gaius_marius
    @gaius_marius Před 3 lety

    I just got a Citizen Perpetual Chrono with Tachymeter for Christmas! I had no idea how to use it. Very clear and useful explanation. Thank you!

  • @pablozorro3507
    @pablozorro3507 Před 2 lety +3

    That is the BEST explanation of the practical uses of a Tachymetre ever 👏

  • @1crans1
    @1crans1 Před rokem

    Absolute great way to explain how a watch works.....just bought a watch after 40 odd years without one and thank you

  • @daynevickers1079
    @daynevickers1079 Před 2 lety +3

    Great explanation... I just purchased a Chronograph watch because I loved the way it looks. I am thrilled to know I can actually use it to time my efficiency at things like preparing burgers or determining the average speed of a car in case my speedometer breaks. 🤣

  • @fteambjj
    @fteambjj Před 3 lety +46

    Those guys who work at a burger joint when they see their bosses wear a chronograph watches be like 😶

  • @jono8884
    @jono8884 Před 3 lety +27

    Great stuff, we almost never used the tachymeter for anything but its looks so understanding its tool usage is nice. Like a slide rule, the more you use it the more it will become familiar.

  • @kevint3845
    @kevint3845 Před 10 měsíci +1

    Really excellent video, ive owned watches like this for ages but never had them explained so well.

  • @dmarti47
    @dmarti47 Před rokem +6

    This is awesome. Thanks for explaining this so clearly and with several easy-to-understand examples. Indeed, these watches are tools and we need to use them to their fullest potential.

  • @benorex8980
    @benorex8980 Před 3 lety +7

    Very well done! I’m a glider pilot and i just got myself a watch with a Tachymeter so your video was extremely helpful.
    Thanks mate and cheers

  • @BobMuir100
    @BobMuir100 Před rokem +1

    Well made video. The tachometer is a great little scale that is so under used and by simply not knowing how or even why!! This is what watch wearers need!!
    Kindest
    Bob
    England

  • @borjacabellos3348
    @borjacabellos3348 Před rokem +2

    A simple, easy and very clear explanation. Thank you!

  • @sharamrock2580
    @sharamrock2580 Před 3 měsíci +1

    Dude, all these years I've had fancy watches & cars and didn't think about the topics that you have explained in the video.
    Thank you for adding to my knowledge.

  • @pg5142
    @pg5142 Před rokem +2

    Suddenly, that mystery ring of numbers on my watch, makes sense. 🙂

  • @billwynne3569
    @billwynne3569 Před 2 lety +2

    PETER, YOU ARE MAGNIFICENT!! AFTER ALL THESE YEARS OF PROFILING EXPENSIVE WATCHES, NOW I KNOW HOW TO ACTUALLY USE THE TACH FEATURES AND THE CHRONOGRAPH, EXPLAINED IN SIMPE EASY TO UNDERSTAND MANNER. SUPERB VIDEO. FIVE STARS!!!

    • @PeterKotsa
      @PeterKotsa  Před 2 lety

      LOL..thanks for the feedback Bill, appreciated 👍🙏
      Cheers

  • @halciber
    @halciber Před 3 měsíci

    This watch feature has been a mystery to me for a long time. Thank you for making this video and explaining how to use this feature.

  • @michaelniemer4449
    @michaelniemer4449 Před 2 lety +1

    So simple, but I never thought to use in reverse with a constant speed to verify distance traveled, fantastic! And then the burger assembly example, time for lunch!

  • @peterpaidnyc
    @peterpaidnyc Před 2 lety +1

    This was by far the best explanation of a chronograph/tachymeter I've come across. Thank you!!!

    • @PeterKotsa
      @PeterKotsa  Před 2 lety

      Glad it was helpful Peter, cheers

  • @vikrampitre2343
    @vikrampitre2343 Před 2 lety +1

    Wow ! Your simplification by practical examples , what a job .

  • @fcllyvr3000
    @fcllyvr3000 Před 3 lety +1

    Peter, thank you for this info in your video. I finally now understand what a Tachymetre is and does. Both my Tissot and my Citizen eco drive has the Tachymetre scale....

  • @stevephlyer
    @stevephlyer Před rokem +1

    Fascinating explanation that makes all this money I have spent in nice watches, actually useful! Thank you very much for this.

  • @ChrisBeckman
    @ChrisBeckman Před 3 lety +1

    Great demonstration of a Chronograph scale!
    I still cannot get over that Speedmaster... simply gorgeous! ❤️💨

  • @VSUKWizard
    @VSUKWizard Před 2 lety +1

    Very imformative. I thought I knew what I needed to know about the tachymeter before I watched the vid. I'm going to have to watch this again a couple of times to feel fully educated.

  • @davezdgalmancornelius6388

    I didn't even know what it's called before this. Thanks for this one. Really helpful.

  • @thisiserich
    @thisiserich Před 3 lety

    I’ve never thought to use a chronograph in some of the ways you explained. Great video!

  • @mhzprayer
    @mhzprayer Před 3 měsíci +1

    I love that the units don't matter. I could be traveling at 120 hamburgers/hour and as long as the pilot doesnt account for deceleration, we know it will take 22.5 minutes to catch Ussain Bolt. That is amazing!

  • @ninhful
    @ninhful Před 11 měsíci +1

    Thank you. I have been looking for the answer since long time. Even watch shop employees couldn't give me satisfactory answers. Some do specialize more on selling.

  • @Walty03
    @Walty03 Před 10 měsíci +1

    The key is one single Unit of your choice, but it has to be constant single of the unit desired.
    Excellent video!

  • @drunkenwaster1218
    @drunkenwaster1218 Před rokem +1

    Superb presentation...throwing clear daylight on a most confusing subject!

  • @alwaysgoclockwise6019
    @alwaysgoclockwise6019 Před rokem +2

    Fantastic! You contextualised and explained it so well! I now know how to use the Tachymeter. 👍

  • @feffe4036
    @feffe4036 Před rokem +1

    This was great. I have never really thought about the tachymeter scale on the bezel. I have learnt something new today! :)

  • @atiliovivern
    @atiliovivern Před rokem +1

    Thanks for your explanation... and ..... What a remarcable collection of watches you have!

  • @myunosy7770
    @myunosy7770 Před 2 lety +1

    GREAT JOB IN explaining it in simple terms

  • @raymartin9129
    @raymartin9129 Před 3 lety

    I love how you even explain the greek origin of the word. Fantastic video.

    • @PeterKotsa
      @PeterKotsa  Před 3 lety

      Thanks Armando, glad you liked it!
      Cheers

  • @beru58
    @beru58 Před rokem +6

    You can use it to check your pulse. Say "nil" when you start the stopwatch. Count 60 heart beats and read your pulse in plain text. (If your pulse is higher than or equal to 60 bpm that is.) But you never do that. You count 15 heart beats and devide the reading by 4.

  • @matiasdiaz127
    @matiasdiaz127 Před rokem

    Cristal clear! Amazing job with this video!! 👍👍👍

  • @alwisxavier3747
    @alwisxavier3747 Před rokem

    Very easy to follow and great explanation. Best video on this function that's on the Internet. Bravo

  • @jsmu1234
    @jsmu1234 Před 8 měsíci

    Thank you so much for the education. I am proud of my Omega even more now.

  • @NonkelGans
    @NonkelGans Před rokem +1

    Damn, what a great explanation. Before this video I thought "what's the use of such a thing, must be more a gimmick than anything else", but with this I now realize how handy it can be for certain situations. Thanx!!

  • @GeneralApex
    @GeneralApex Před 3 lety +1

    Thank you very much for multiple example, it clear even for me being someone that understand stuff slower!

  • @ThePeteutube
    @ThePeteutube Před rokem +1

    Very well presented. Good job with the examples. Perfect.

  • @JLa748
    @JLa748 Před rokem

    great examples and explanation. Thank you

  • @sheilasinghal2922
    @sheilasinghal2922 Před rokem +2

    What a great video. I had no idea I could do all that with my inexpensive chronograph/tachymeter watch. (But I like your Omega much better than what I have!). 😊

  • @davidpippin3460
    @davidpippin3460 Před 3 lety +5

    Peter, great simple explanations. Thank you! I just went to my collection to see if I have one with a tachymetre, nope. Gotta get one now!

    • @PeterKotsa
      @PeterKotsa  Před 3 lety

      I have several David and I use them in a variety of situations, very handy :)

  • @alkiviadiskaminaris1594
    @alkiviadiskaminaris1594 Před rokem +2

    Kudos for pronouncing χρονογράφος so elegantly.

  • @paulkeogh33
    @paulkeogh33 Před 3 lety +1

    Thanks for your help, sure worked for my seastar.

  • @eddieforbes3054
    @eddieforbes3054 Před 3 lety +3

    Fantastic explanation of how to use the tachymeter. I have always struggled with this, not any more! Thank you. Absolutely love your videos, amongst the very best on CZcams. Keep up the good work 👌

    • @PeterKotsa
      @PeterKotsa  Před 3 lety +1

      Glad it was helpful Eddie and Thanks again mate 👍

    • @eddieforbes3054
      @eddieforbes3054 Před 3 lety

      @@PeterKotsa You're welcome mate, credit where credit's due!

  • @chasfoster9895
    @chasfoster9895 Před 3 lety +1

    WoW! Best chrono class ever. Thanks.

  • @thepretenda
    @thepretenda Před 2 lety +3

    This has been a great tutorial! Thank you for enhancing my joy for watches with this masterclass!

  • @DanM680
    @DanM680 Před 2 lety +1

    Amazingly simple explanation. Appreciated. Thank you.

  • @onkarl3021
    @onkarl3021 Před rokem +1

    Absolutely amazing description!!!

  • @Jumbohd101
    @Jumbohd101 Před rokem +1

    Thanks man 👍 I have so many watches with tachymeter now I understand what it measures 😁 big help and keep up the good work 💪💪

  • @ricotsang1950
    @ricotsang1950 Před 3 lety +1

    Best explain I found. Thank you

  • @colinw7496
    @colinw7496 Před 3 lety +2

    Great video. I appreciate the clear description of using the tachometer. Now I'm going to have to get one.

    • @PeterKotsa
      @PeterKotsa  Před 3 lety

      Plenty to choose from that’s for sure 👍

  • @anthonywilliamson7323
    @anthonywilliamson7323 Před rokem +2

    Had my speedmaster 40 years and never knew how the tachymetre worked brilliant explanation

  • @adahir12
    @adahir12 Před 2 lety +1

    It’s wonderful explanation, you’ve increased my knowledge regarding watches. When it comes non digital watches my side was its was useless watches for me. Thank you.

  • @jophiljoaquin2057
    @jophiljoaquin2057 Před 2 lety

    very simple explanation, love it easy to understand, now I know the use of my watches with tachymeter, thanks a lot🙏👍💪

  • @user-wh5rw8zp3z
    @user-wh5rw8zp3z Před 6 měsíci

    Wow thank you I just got a Seiko X with this and now I know how to use this tool tool.

  • @diagorasmoustakas249
    @diagorasmoustakas249 Před 7 měsíci +1

    Ευχαριστούμε φιλε ;) Πολυ Ωραία παρουσίαση

  • @nooralkhateeb21
    @nooralkhateeb21 Před rokem +1

    Thank you for the very simply explanation, great.

  • @blackarc
    @blackarc Před 2 lety +3

    Effective examples , I appreciated that you used both speed distance and worker examples to explain the usage.

  • @user-fh7cz7eo8l
    @user-fh7cz7eo8l Před 4 měsíci +1

    thanks great explanation and examples

  • @shaunjenkin5945
    @shaunjenkin5945 Před 8 měsíci +1

    Love the knife in the opening shots, cheers

  • @alraffar
    @alraffar Před rokem +2

    Brilliant brilliant video, Peter. It’s a revelation to me 😊. Thanks for sharing this knowledge.

  • @juanrafaeltosado1812
    @juanrafaeltosado1812 Před 10 měsíci +2

    GREATEST THANKS RALPH 🙏.

  • @pchatterjee4150
    @pchatterjee4150 Před 3 lety +4

    Awesome video! Very well explained. I am enjoying each and every video from the time I subbed ; I like your way of explaining different features or functions that has anything to do with watches, something very different from most CZcamsrs who who simply review a watch and tell stuff, we mostly know, but still watch it to get a good idea of how the watch's going to be in flesh. I would appreciate a video on explaining in simple terms what makes the expensive watches expensive and uncovering some mechanical / automatic movements right from the basic movement.
    Another video may be on how to understand which watch will retain most of its value, given that as collectors we feel the constant temptation to keep buying one after another. Keep up the great work mate!

    • @PeterKotsa
      @PeterKotsa  Před 3 lety +1

      Thank you, appreciate the positive and constructive feedback. Cheers

  • @kingkleee
    @kingkleee Před 2 lety

    such a comprehensive explanation. Thanks Peter ... love it!!!

  • @CanadianBeachcomber
    @CanadianBeachcomber Před 3 lety +1

    Thank you for making this video. I have saved it for future reference. Now I want to find reviews of these chronographs.

    • @PeterKotsa
      @PeterKotsa  Před 3 lety +1

      Great stuff, I have 2 reviews here on my channel so far (the Omega speedmaster and Seiko speed timer) 👍

  • @wisniewskiedward1
    @wisniewskiedward1 Před rokem +15

    You really made this topic very understandable using easy to follow examples! Thank you, well done!

  • @Carloshernandez-kk7dp
    @Carloshernandez-kk7dp Před 3 lety +3

    Best explanation I’ve heard thank you 😊

    • @PeterKotsa
      @PeterKotsa  Před 3 lety

      My pleasure Carlos, glad you enjoyed it 😉

  • @gustavomello6667
    @gustavomello6667 Před 10 měsíci +1

    Great explanation. Thanka you

  • @ryannewby447
    @ryannewby447 Před 3 lety +1

    wow. what a clear explanation! Thank you. Never really understood it, but do now!

  • @goldzilla526
    @goldzilla526 Před rokem +1

    Another very useful knowledge to have

  • @romariocoelho5813
    @romariocoelho5813 Před rokem +1

    Changed my life 👍🏼

  • @eddie3301
    @eddie3301 Před 2 lety +1

    Thank you for detail examples explanation.

  • @RS-dz3ve
    @RS-dz3ve Před 3 lety +1

    Superb. I loved the example with the hamburger 🍔

  • @anonymousduh1424
    @anonymousduh1424 Před rokem +1

    Very nicely explained! Ty

  • @GTA-om4iy
    @GTA-om4iy Před 3 lety +1

    Wow thats really useful 😍 i have my tachy watches for a long time and i didnt know how it worked until now 😂 i actually thought its just something to make it look sophisticated but its useful. Thanks a lot.

    • @PeterKotsa
      @PeterKotsa  Před 3 lety

      My pleasure
      Glad it was helpful 👍

  • @gregorygiakoumidis7149
    @gregorygiakoumidis7149 Před 6 měsíci +1

    good explanation thanks!

  • @ServiceOrchestramegastore
    @ServiceOrchestramegastore Před 8 měsíci +1

    It was really helpful video. thank you for shearing this useful information.

  • @orangeblock3792
    @orangeblock3792 Před 3 lety +3

    Holy smokes! This guy just taught me ALL about my watch!!!

  • @YO9DOC
    @YO9DOC Před rokem

    Tnks for video ,i learn alot in this video about cronograpf and tachimeter

  • @MrAmk3rd
    @MrAmk3rd Před rokem +4

    Spot on! Thanks for that! It was explained to me years ago but not like that. Now i understand. I'll start using it. Good stuff. Thumb up, subbed. Looking forward to seeing more. 👊👊👍👍🤘🤘

  • @joshimitsu96
    @joshimitsu96 Před 2 lety

    finally I researched how tachymeters work, very interesting

  • @j.aditya7117
    @j.aditya7117 Před rokem +1

    thank you, it is a very useful explanation

  • @atifasadkhan
    @atifasadkhan Před rokem

    I have learnt something new today!! thanks Peter!!!

  • @edmundchiang
    @edmundchiang Před 3 lety +22

    Thanks for the excellent introduction. Just a remark: speed as shown in any speedometer always represents an average speed, or average velocity in physics term. You need to have a distance travelled against the time taken to calculate a value “speed”. That is, distance travelled per unit time. That is why Newton’s “instantaneous velocity” (speed in “no time”) is so contradictory and so difficult to understand (probably no one can really understand still) ...

    • @PeterKotsa
      @PeterKotsa  Před 3 lety

      👍😎

    • @BIoodBath
      @BIoodBath Před 2 lety +4

      In physics terms it would still be "average speed." Velocity implies speed + direction. Instantaneous velocity is change in position in "no time," not speed.

    • @bmjames
      @bmjames Před 11 měsíci

      Instantaneous velocity gives you the hypothetical direction & speed that something would continue to travel at, if it immediately stopped changing speed or direction.
      To put it in car terms, let's imagine you are cornering, when you suddenly hit a perfectly frictionless ice sheet and lose all grip. Your car's centre of mass would continue to move in a straight line, at the direction and speed it was going when it hit the ice. The instantaneous velocity at any point in time is the hypothetical ice sheet scenario at that point.

    • @edmundchiang
      @edmundchiang Před 11 měsíci

      @@bmjames you can use the current D-modules theory/language to deal with derivatives. The formal symbolic calculations setup is essentially what have been known as operational calculus from the 19th century, which is the rationale behind Heaviside’s calculus and most probably operational methods behind Ramanujan’s calculations. You can find recent attempts by G.C. Rota about rigorous approach on umbral calculus. But the D-modulus is a much better language.

  • @sriramprakashravichandran5248

    Thank you. Explanation was great 👍

  • @goodlifebdg
    @goodlifebdg Před 3 lety +3

    Wow that is a thorough explanation of tachymetre 👍🏻👍🏻

    • @PeterKotsa
      @PeterKotsa  Před 3 lety +2

      I love chronographs and Tachymeter's so i thought I'd share a video on how to use them, cheers