What is a Tachymeter Anyway? Dial Scales Explained - Watch and Learn #7
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- เผยแพร่เมื่อ 27 ก.ย. 2024
- In episode #7 of Watch and Learn, we look at the Tachymetre scale that is found on the Omega Speedmaster and so many other watches. We explain what it is, and how you use it. Additionally, we check out Telemeters used to measure the distance of storms, as well as the Pulsometer which is used to measure your heart rate.
Links to the watches shown in the video:
longislandwatc...
longislandwatc... - แนวปฏิบัติและการใช้ชีวิต
This is the best, clearest explanation of the function of a tachymeter scale that I have ever read or seen. Outstanding job, Mark! In fact, this whole series of Watch & Learn has been a delight.
Wonderful presentation and you are an excellent teacher, very reassuring and non patronising for the likes of a novice like myself, I really love your very gentle and pleasant manner, I only wish you lived and had a shop in Wales UK, but still a big Thank you for spending your time and knowledge with us around the world. Ronnie
indeed the formula "you measure one unit per seconds and it shows you how many units happen in hour" simply cleared everything up. No nonsense in pompous voice like in other videos.
I feel this is the Engineering Explained of watch channels with videos like this. Which i do indeed like btw
Great, thank you!
Good comparison
I am a Plastics Engineer and we often have to calculate how many parts can come out of an injection molding machine in an hour. Since most cycles run under a minute, this makes it a perfect Injection Molding Process Engineer Watch!.Just saying ;)
Perfect. Leave it to an engineer! Watch those sprues and runners!
you may have convinced me to get a tach watch! - manufacturing engineer General Motors.
@@ZeroGorDIEThis would probably would be better than counting your fingers and toes while chiseling the results on the cave wall of the factory . 🤣
Might even sell enough vehicles to get one of those new fangled scientific calculators , or heck , at least an abacus .
I own a chronograph with a tachymeter, so I already knew how to use it, to measure distances that is, I knew it was just a unit conversion, but it never dawned on me that it just counted units per hour and could be used for anything... This was surprisingly informative
Jorge Daniel great! Awesome to hear!
How do you use it to judge distance?
When it's 1:30 am and you discover a new awesome channel on TH-cam....
Thanks so much! Happy to help your insomnia.
charls seal same here 1:30 am exactly lol
I'm amazed I'm not alone! :)
You can time how long it takes to lose an argument with your wife and extrapolate how many times you'd expect to lose if you argued for an hour.
@Imran Alec that’s not cool
😆
Man: Honey you right!
Wife: Huh, I didn't say anything!
Man: I'm just trying to save time.
I have a Tissot PR516 (the baby brother to the Speedmaster) since Dec 1972 (21st birthday). It has a tachymetre and a base 15 pulsations scale but never knew how to use it correctly. Thank you for this video. Never too old to learn something new.
Being a total nerd (now retired engineer, but still a nerd), I had a chronometer years ago and looked up all the functions. This was a great refresher since I received my Dan Henry 1939 chronograph yesterday.
Years ago I learned that sound travels at about 1,000 ft/sec and got in the habit of counting seconds during thunderstorms to get the distance to the storm. It just now occurred to me that it would have been nice to have a chronograph when I used to go mountaineering and frequently got caught by thunderstorms, especially when above tree line here in Colorado. That would have been a great, possibly life-saving, tool to have to tell us when the storm was dangerously close and it was time to take cover. Of course, there wasn’t much cover, so we’d jettison our backpacks (aluminum frames) and lay down flat in the lowest nearby depression in the rocks and wait it out.
Thanks for an excellent, clearly explained video!
It’s so good to come back to talk about things that we know, but it’s always good to hear them again. That way we wash aficionados like us want to get into a watch which one you rather have it’s up to us to collect us what we really like thank you Mark for the great informationagain I believe this is my seven time watching the video
Excellent explanation. Your engineering background is a big help. Speedy was a driving watch before it was a NASA watch, hence the usefulness of the tachymeter.
I've got a lot of spare time atm and i'm learning so much from the ability to indulge in your vids daily.
Great! Glad to hear it.
Thanks Marc. You are now officially my favorite channel hands down!
Imthiaz Jamal wow! Thanks.
Hey Mark. I've been watching every one of these videos over the last couple of days. One word: superb! Clear and fascinating explanations with the perfect amount of detail. Thank you for doing these. They're making me appreciate my mechanical watch even more. My next purchase will be from Long Island because of these.
Thanks so much, I appreciate that.
Very helpful information! I really didn’t understand just what a tachymeter did, and I’ve spent a lot of time going around that old sun! THANK YOU for the video!!!
Thank you so much, I’ve been trying to learn how to use the tachymeter but every other TH-cam video was too fast paced and didn’t describe what was what. This video helped a ton and now I fully understand it, and the graphing was a great idea, that helped me visualize it so much better!!! Thank you!
Great Job! I used a slide rule in highschool, late 60s. I amazed and amused folks at the bar using the dials of my watches. It helped to win/get a few free drinks!
The way i always used a tachymeter was by counting 60 occurences of the event and reading events per minute from the scale. This works for measuring pulse, though it's not as quick as the two watches you showed at the end.
Great subject Marc, think I will have to watch couple of times to take it all in thou, 🤔
LOL, great idea! Put it on a loop : )
Without doubt; the BEST video on TH-cam explaining this; thanks!
WOW, thank you!!!
Mark, I'm very late watching these having just got into watches, but I really appreciate all the knowledge you're imparting to us all. Bravo 👏 And you never know, maybe back in 1969, they did really use the tachymetre!
Great breakdown of these watch scales. The Watch and Learn is a very useful series.
This video is precisely why I've subscribed to your channel! Thanks for the clear and concise explanation(s). That Zepplin watch, tho *swoon*
I agree, this is "the best" explanation of a tach watch. I watched a number of videos and this numero uno! Nice job Mark!!
Thanks so much.
I know how a Tachymetre works, but your explanation was as clear as mud!
robbiecox Hmmm. Sorry about that. Maybe next time!
Now that I understand it chronographs are actually really cool. Thanks
Makes a bit more sense now.
That was the most complicated explanation I’ve heard about the tachymeter
Thanks for explaining this concept in a way that my feeble brain can comprehend! Now I'll be re-re-watching the slide rule video to re-learn the logarithms that I supposedly learned in high school! :)
Just got a watch with a tackymetre, knew about what it was for now I do know. Thanks.
These watch and learn videos are great. Thanks for doing them Mark!
Being modest Marc, great lefty handwriting.
I have a Timex Flyback Chronograph with the tachymeter on a static bezel. Thank you for bringing another dimension to the usefulness of my watch.
Great to hear!
Mark - really enjoying you videos, learning a lot about watches. I also have a background in ME and routinely use a tachymeter to measure water flow from groundwater wells using a 6-gallon bucket. For 6-gallon you just slide the decimal point on place, for 3-gallon mark on your bucket you divide by scale number by 2. Using these two buckets you can pretty much measure flows from 3 to 25 gpm with the right watch. When I buy watches for field work this is a requirement.
Coolness! Sounds like a Civil Engineer at heart!
You really do have a way with explaining things!
Wow, I definitely thought it was a much more complicated process. Thanks for another great video Marc!
Ilya Ibragimov Thank you for taking the time to watch.
Ilya Ibragimov 9
Great video! I love these in depth explanations!
Roelf van der Merwe thank you. Glad I'm going in the right direction.
Another great video Marc. After watching one of your previous videos I had to get a Bulova Accutron Spaceview. It arrived today and i'm wearing it while watching this video. Thanks for the inspiration
That's awesome, enjoy!
Thank you for this insight, I've now watched a couple of your videos and found them extremely informative.
Thank you!
Thank you! This video is awesome to learn! The zeppelin is siper cool having both functions!
These are great videos you make. I have learned so much. Thanks
You do explain very well
Wonder when you start wearing watches around your legs 😋
Great explanation in this video by the way!
Some do ready but usually not to tell time but to tell location
Love seeing an engineer's perspective! Glad that you plotted it out on a logarithmic scale.
It's strange that I easily learned how to use a diving bezel, slide rule bezel, and telemeter bezel, but tachymeter has always stumped me. Maybe everyone's brain just works differently. Thanks for this vid Mark. Hopefully the info will finally stick to me.
Thanks you. The best explanation ever 💡
This would be really fun to use out on the kayak fishing. Also when hiking and camping.
Ha! I was able to use the base 15 Pulseometer of the second watch during the video to calculate my bpm at 70. Cool.
On most American highways there are distance markers for every tenth of a mile. Just count the time between two of them (0.1mile) and multiply the tachymeter reading by ten. Basically move the decimal point one space to the right.
Excellent video. Love the whole series.
Daniel Fortune Thank you!
Very great and clear explanation. Thanks for the awesome video!
Glad you enjoyed it.
Thank you so much for explaining them so clearly
Thank you!
Brilliant explanation
Always Love a detailed explanation!!
Thanks!
Great video, super useful to know what all that actually does. I just got the Seiko sna411 and I have no idea what any of it means! Haha, still love these types of extra features. Having tons of fun slowly learning, thanks!
The speed of sound is approximately 343 m/s. The exact one is said to be 340.29 not very easy to remember, hence the former works like a charm.
It does vary by temperature and pressure but your number sounds right for normal room temperature.
That speedmaster looks awesome.
i have to say big thanks for the great explanation
Had zero clue what the tachymetre was for nor that there were different meters with different purposes. Had to share this one with the rest of my friends and sound like I knew something lol.
Cheers
Perfect!
Perfect explanation, thank you.
I could really use it at my job when at an automatic assembly line in order to calculate the output per hour. Unfortunately I don't have a tachymetre watch (yet).
I wonder if Archie luxury could explain this as well as Marc he is always banging on about his speedy maaaaaaaan on the mooooooon 😡 excellent once again marc👍
Thanks for watching.
Awesome video!
Thanks Mark, once more!
great explanation….reminds me how much I still hate math. Keep up the great videos.
Everything I find tells how to use scale that starts at 400, 500 or 600. How about the 0 to 60 scale found on a lot of watches. How do you use those?
You had me at log-log... ;)
I like your videos - very good explanations!
rgds
Thanks!
Outstanding. Well done!
Thanks.
Very interesting. Thanks.
excellent video (and channel). many thanks
How many of you while watching the Aristo watch measured their pulse 😂? Another great Watch and Learn video Marc.
Can I use the pusher while wearing my chronograph? I know that engaging the crown should be done while not wearing the watch to prevent damage. Should I also take off my chronograph to use the timer? Just one my first one and not really sure.
Thanks for the good information ❤️
Hi...Please tell me if the tachymeter bezel in some watches is rotatable both clockwise and anticlockwise. If so how to use a rotatable bezel tachymeter scale? Thank you sir
Is it just the angle, or is 6 seconds pointing closer to 2.5 seconds rather than 2 second?
Wow thanks, thats very interesting.
Akuma's RSNL thank you.
Excellent vid, as usual. Curious though why you didn't highlight the Speedy as a racing watch, and use use some car examples to illustrate its uses. After all, the Speedy was designed as a racing watch, not a moon watch.
Long Island Watch a
Could you recommend a bracelet for my Tag Formula 1 Tachometer?
are those watches with the timezone abbrivations on the watchface itself there to be used as a tachymeter? or chornometer or whatever? i duno why else it would be there considering its on most of the digital parts of the watch itself.
Thank you and great learning!
That's what it is all about
Haha love holding a scratched up watch with white gloves, dont get me wrong I love the watch and want an original 60s one just funny
that zeppelin is gorgeous
So if you use minute hand instead of a second hand, you can measure much larger timeframes.
Great video btw.
KefirDrinker Didn't think of that.
KefirDrinker yes but how do you set the minute hand at 12 in the beginning? also it would read in units per 60h which seems rather useless
For events that are longer than 60 seconds you would need to. Some watches have rotating tachymeter bezel so you can align it with the minute hand. Although, that is rare.
Very informative!
Spartan Buff Great!
I use my techymeter to figure out my speed when I cycle, I'm always racing myself.
You're your own competition!
I really would love to see the Graham number on the bezel just near 12 o clock.
You can use any watch as a telemeter. You don’t need a telemeter on your watch. Just remember that every 3 seconds is equivalent to 1 kilometre. Then you just keep counting the seconds and then divide the reading by 3. The answer will be in kilometres.😎
The telemeter scale is not inaccurate when measuring the distance of a lightning, just set to a certain temperature and air density (approx. 4.7-4.9C and 1.27ρ). Also, a base-30 pulsometer is not very practical; a base 10 or 15 is more pragmatic. Last, second-increment chronographs are very apporpriate when using a telemeter/tachymeter or pulsometer.
Very cool. Thanks.
Hey Marc- great video. What's your opinion on the Speedy Reduced when it comes to servicing? Is it really as bad/expensive as they say?
Andrew C Hi Andrew, I've just seen another video by Marc and he's of the opinion that there's no need to service a watch if it isn't doing anything odd, which I thought was great, as it will surely save a lot of money! From what I've heard, they are really reliable and don't go wrong often.
Daytona as well ;) !! Great Vid
Alexandre Besson Ah! Iconic as well!
I have this watch, bought it in 1973, but it needs an overhaul.
lucky..!
Awesome thanks !! Now atleast I can answer if someone asks me "what does these numbers do on your watch basel?"
How to measure tachymeter 1/20sec chronograph watch
Hello do you own a bulova maqiuna watch?
nice! thanks
Superb
I use tachymeter to time the plane take off on run way’ from white stripes to VR take off time of what speed it takes to take off ,
any new watches that look like Accutron space view style?
What would the tachymeter value be at 1min 5 seconds?
55.38
As a more helpful answer, any time can be used. You just been to divide into a 60 second base. So 1 min 5 sec would be 65 seconds; divide this by 2 to get 32.5 (now it's into base 60). Look at 32.5 (reads just less than 110 according to the angle shown in this video), so about 55 of whatever your unit is (km/h, mpg, feet per second, whatever). Same for any other numbers, whatever you get by divide into base 60, and divide the number on the tach by the same amount.
Great video! Has anyone ever commented btw that you look a little similar to Joey Salads? He's one of those "prank" TH-camrs 😂
Nope. I'll look him up.
The telemeter is less than 3% off, and the error won't increase. If it's every 3 seconds for a km, it'll be out by 2.9% the whole time. (0.343 km/s)(3 s)= 1.029 km or 2.9% off. (0.343 km/s)(60 s)= 20.58 km or 2.9% off. It'll always be 2.9% off.
Was that a pun when you say 'hum along' regarding the Boluva? lol
on purpose!