How To Use A Tachymeter

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  • Опубліковано 15 тра 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
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КОМЕНТАРІ • 857

  • @avrankulj
    @avrankulj 3 роки тому +803

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

    • @PeterKotsa
      @PeterKotsa  3 роки тому +74

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

    • @sstewart82ss
      @sstewart82ss 2 роки тому +9

      😂

    • @robinrobson5363
      @robinrobson5363 Рік тому +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 Рік тому +1

      My thoughts exactly

    • @kkrsnn5632
      @kkrsnn5632 Рік тому +10

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

  • @samsonstaats3851
    @samsonstaats3851 3 роки тому +642

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

    • @PeterKotsa
      @PeterKotsa  3 роки тому +17

      My pleasure
      cheers

    • @mwendwamunene538
      @mwendwamunene538 3 роки тому +8

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

    • @omerozyer9061
      @omerozyer9061 2 роки тому

      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 Рік тому

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

    • @JasonFisk
      @JasonFisk 11 місяців тому

      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 3 роки тому +307

    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  3 роки тому +40

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

    • @robinrobson5363
      @robinrobson5363 Рік тому +5

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

    • @heathwasson7811
      @heathwasson7811 Рік тому +36

      @@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 Рік тому +12

      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 Рік тому +2

      @@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 2 роки тому +224

    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  2 роки тому +13

      👍

    • @UNSCPILOT
      @UNSCPILOT 2 роки тому +7

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

    • @Mikesmeyer88
      @Mikesmeyer88 Рік тому +15

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

    • @ahsanabir2902
      @ahsanabir2902 Рік тому +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 Рік тому +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.

  • @benmurray1902
    @benmurray1902 Рік тому +9

    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!!

  • @JO-vs5bx
    @JO-vs5bx 7 місяців тому +5

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

  • @michaelcorvin4330
    @michaelcorvin4330 Рік тому +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 Рік тому +3

      THANK YOU!

    • @romrig4648
      @romrig4648 Рік тому +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 Рік тому +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 8 місяців тому

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

  • @baba.mkhulu
    @baba.mkhulu Рік тому +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. 🙏🏽

  • @pablozorro3507
    @pablozorro3507 Рік тому +3

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

  • @gaius_marius
    @gaius_marius 3 роки тому

    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!

  • @1crans1
    @1crans1 Рік тому

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

  • @martinkaloki2677
    @martinkaloki2677 7 місяців тому +8

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

  • @halciber
    @halciber Місяць тому

    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.

  • @vikrampitre2343
    @vikrampitre2343 Рік тому +1

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

  • @thisiserich
    @thisiserich 3 роки тому

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

  • @fteambjj
    @fteambjj 3 роки тому +47

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

  • @alwaysgoclockwise6019
    @alwaysgoclockwise6019 Рік тому +2

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

  • @fcllyvr3000
    @fcllyvr3000 3 роки тому +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....

  • @VSUKWizard
    @VSUKWizard Рік тому +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.

  • @sharamrock2580
    @sharamrock2580 Місяць тому +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.

  • @kevint3845
    @kevint3845 9 місяців тому +1

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

  • @feffe4036
    @feffe4036 Рік тому +1

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

  • @jono8884
    @jono8884 3 роки тому +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.

  • @dmarti47
    @dmarti47 Рік тому +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.

  • @matiasdiaz127
    @matiasdiaz127 Рік тому

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

  • @borjacabellos3348
    @borjacabellos3348 Рік тому +2

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

  • @daynevickers1079
    @daynevickers1079 2 роки тому +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. 🤣

  • @alwisxavier3747
    @alwisxavier3747 Рік тому

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

  • @drunkenwaster1218
    @drunkenwaster1218 Рік тому +1

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

  • @michaelniemer4449
    @michaelniemer4449 2 роки тому +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!

  • @BobMuir100
    @BobMuir100 Рік тому +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

  • @ThePeteutube
    @ThePeteutube Рік тому +1

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

  • @shaunjenkin5945
    @shaunjenkin5945 6 місяців тому +1

    Love the knife in the opening shots, cheers

  • @davezdgalmancornelius6388
    @davezdgalmancornelius6388 Рік тому +2

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

  • @jsmu1234
    @jsmu1234 6 місяців тому

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

  • @stevephlyer
    @stevephlyer Рік тому +1

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

  • @myunosy7770
    @myunosy7770 Рік тому +1

    GREAT JOB IN explaining it in simple terms

  • @JLa748
    @JLa748 11 місяців тому

    great examples and explanation. Thank you

  • @atiliovivern
    @atiliovivern Рік тому +1

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

  • @onkarl3021
    @onkarl3021 Рік тому +1

    Absolutely amazing description!!!

  • @beru58
    @beru58 Рік тому +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.

  • @GeneralApex
    @GeneralApex 3 роки тому +1

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

  • @sheilasinghal2922
    @sheilasinghal2922 Рік тому +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!). 😊

  • @peterpaidnyc
    @peterpaidnyc Рік тому +1

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

    • @PeterKotsa
      @PeterKotsa  Рік тому

      Glad it was helpful Peter, cheers

  • @paulkeogh33
    @paulkeogh33 2 роки тому +1

    Thanks for your help, sure worked for my seastar.

  • @nooralkhateeb21
    @nooralkhateeb21 Рік тому +1

    Thank you for the very simply explanation, great.

  • @eddieforbes3054
    @eddieforbes3054 3 роки тому +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 UA-cam. Keep up the good work 👌

    • @PeterKotsa
      @PeterKotsa  3 роки тому +1

      Glad it was helpful Eddie and Thanks again mate 👍

    • @eddieforbes3054
      @eddieforbes3054 3 роки тому

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

  • @anthonywilliamson7323
    @anthonywilliamson7323 Рік тому +2

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

  • @ChrisBeckman
    @ChrisBeckman 3 роки тому +1

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

  • @RS-dz3ve
    @RS-dz3ve 3 роки тому +1

    Superb. I loved the example with the hamburger 🍔

  • @kingkleee
    @kingkleee Рік тому

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

  • @DanM680
    @DanM680 2 роки тому +1

    Amazingly simple explanation. Appreciated. Thank you.

  • @b.peppercorn739
    @b.peppercorn739 3 роки тому +10

    Now I can use my Daytona and don’t have to leave it in the watch box. Thanks mate

    • @PeterKotsa
      @PeterKotsa  3 роки тому

      Brilliant, enjoy it !!!👍

  • @davidpippin3460
    @davidpippin3460 3 роки тому +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  3 роки тому

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

  • @ricotsang1950
    @ricotsang1950 3 роки тому +1

    Best explain I found. Thank you

  • @sriramprakashravichandran5248

    Thank you. Explanation was great 👍

  • @raymartin9129
    @raymartin9129 3 роки тому

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

    • @PeterKotsa
      @PeterKotsa  3 роки тому

      Thanks Armando, glad you liked it!
      Cheers

  • @Jumbohd101
    @Jumbohd101 Рік тому +1

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

  • @benorex8980
    @benorex8980 3 роки тому +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

  • @atifasadkhan
    @atifasadkhan Рік тому

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

  • @ServiceOrchestramegastore
    @ServiceOrchestramegastore 7 місяців тому +1

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

  • @blackarc
    @blackarc 2 роки тому +3

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

  • @colinw7496
    @colinw7496 2 роки тому +2

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

    • @PeterKotsa
      @PeterKotsa  2 роки тому

      Plenty to choose from that’s for sure 👍

  • @aminsaid4379
    @aminsaid4379 Рік тому +1

    Thank you so much. The bloke who sold me my first Seiko Chrono, told me that the tachymeter is on all chronos, because its patented that way🤦‍♂️

  • @jophiljoaquin2057
    @jophiljoaquin2057 2 роки тому

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

  • @orangeblock3792
    @orangeblock3792 3 роки тому +3

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

  • @mhzprayer
    @mhzprayer Місяць тому +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!

  • @anon73728
    @anon73728 2 місяці тому +1

    thanks great explanation and examples

  • @markopolic9964
    @markopolic9964 3 роки тому +7

    Fantastic explanation! Please note that the speed calculated in example 1 is still the average speed of the car over 1km. If the car doesn't decelerate nor accelerate, then the current speed = average speed, but the read speed is still average. If the time passed from starting to stopping the chrono was very very low, then it would be the true current speed. Otherwise, great explanation 👍

  • @Walty03
    @Walty03 9 місяців тому +1

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

  • @thepretenda
    @thepretenda 2 роки тому +3

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

    • @PeterKotsa
      @PeterKotsa  2 роки тому

      my pleasure..enjoy the journey

  • @alraffar
    @alraffar Рік тому +2

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

  • @Nicklessization
    @Nicklessization Рік тому +1

    Brilliant and extensive. Thank you.

  • @ninhful
    @ninhful 9 місяців тому +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.

  • @suryas6429
    @suryas6429 7 місяців тому +1

    Excellent video, you have explained everything in the best possible manner.

    • @PeterKotsa
      @PeterKotsa  7 місяців тому

      Glad it was helpful!

  • @fitforfreelance
    @fitforfreelance 10 місяців тому +1

    Thanks for the illustrative examples!

  • @wisniewskiedward1
    @wisniewskiedward1 Рік тому +15

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

  • @YO9DOC
    @YO9DOC Рік тому

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

  • @pchatterjee4150
    @pchatterjee4150 3 роки тому +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 UA-camrs 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  3 роки тому +1

      Thank you, appreciate the positive and constructive feedback. Cheers

  • @stefbacum4454
    @stefbacum4454 3 роки тому +1

    Great video and explanation Peter. Thank you!

  • @CanadianBeachcomber
    @CanadianBeachcomber 3 роки тому +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  3 роки тому +1

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

  • @MrAmk3rd
    @MrAmk3rd Рік тому +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. 👊👊👍👍🤘🤘

  • @edmundchiang
    @edmundchiang 3 роки тому +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  3 роки тому

      👍😎

    • @BIoodBath
      @BIoodBath 2 роки тому +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 9 місяців тому

      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 9 місяців тому

      @@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.

  • @NonkelGans
    @NonkelGans Рік тому +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!!

  • @HiepNguyen-zs4up
    @HiepNguyen-zs4up Рік тому +2

    Great video never knew how to use the tachometer on a watch just thought it looked cool!!! But a very valuable tool on a watch

  • @ryannewby447
    @ryannewby447 3 роки тому +1

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

  • @chasfoster9895
    @chasfoster9895 2 роки тому +1

    WoW! Best chrono class ever. Thanks.

  • @user-wh5rw8zp3z
    @user-wh5rw8zp3z 5 місяців тому

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

  • @billwynne3569
    @billwynne3569 2 роки тому +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  2 роки тому

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

  • @eddie3301
    @eddie3301 2 роки тому +1

    Thank you for detail examples explanation.

  • @gaz.7880
    @gaz.7880 10 місяців тому +1

    Great video, i learned something new today thanks

  • @jeffestrada6857
    @jeffestrada6857 Рік тому +2

    Great explanation, clear & concise thank you 👍

    • @PeterKotsa
      @PeterKotsa  Рік тому

      Glad it was helpful Jeff
      cheers mate

  • @j.aditya7117
    @j.aditya7117 Рік тому +1

    thank you, it is a very useful explanation

  • @Carloshernandez-kk7dp
    @Carloshernandez-kk7dp 3 роки тому +3

    Best explanation I’ve heard thank you 😊

    • @PeterKotsa
      @PeterKotsa  3 роки тому

      My pleasure Carlos, glad you enjoyed it 😉

  • @goldzilla526
    @goldzilla526 Рік тому +1

    Another very useful knowledge to have

  • @devvratarya3274
    @devvratarya3274 3 місяці тому +1

    This video is tremendously helpful. I got all my doubts and queries cleared. Thanks for such a detailed descriptive video. 💐🙏🏻

  • @vladimirmolina6375
    @vladimirmolina6375 2 місяці тому +1

    Very relevant !!! Thanks for the explanations !!!

    • @PeterKotsa
      @PeterKotsa  2 місяці тому

      My pleasure Vladimir 👍

  • @seepersadseepersad5028
    @seepersadseepersad5028 Рік тому +1

    Excellent. Thank you for this valuable information.

  • @joshimitsu96
    @joshimitsu96 2 роки тому

    finally I researched how tachymeters work, very interesting

  • @goodlifebdg
    @goodlifebdg 3 роки тому +3

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

    • @PeterKotsa
      @PeterKotsa  3 роки тому +2

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