"Calibrate your instruments" I love that

This is the most crystal clear tutorial that I have seen. Thanks.

I love it how the wizard smirks @ 1:28 as he’s giving the answer. He knows only a few was able to follow him till the end.

I'm not intelligent enough to know what any of those numbers meant, but I immediately felt smarter from watching it

An easier method takes advantage of Parallax and Anatomy. Your eyes are 1/10 the distance apart as the length of your arm. so standing squarely before your target, and hold out your thumb directly in front of you, and look at it alternately from each eye, your thumb will appear to move 1/10th the distance from left to right as your reference object is from where you stand. So if your reference object is a 15ft car length and the edge of your thumb appears to move 5 car lengths from eye to eye (60ft), 10x60= you are standing 600ft away. the math is simpler this way.

Simply brilliant! I never even thought of that obvious radian relation.

My thumbs or fingers don't quite work but I did manage to get an excellent calibration of my own. I have to lie on my back and it is better done alone but it is tremendously satisfying. What a great tip!

Very clever! Thank you for a clear tutorial.

This is excellent. I'm tired of people saying the distance is 500 yards when it is actually just over 200 yards. Thanks!

An awesome trick life saver trick on wildlife!

Incredibly practical, thanks a lot

I’ve used, “Down there a bit,” and that seems to work well enough.

Really amazing. I need to work with this. Thank you!

Instead of the Rule of Thumb, we could even call it the “Ruler of Thumb!”

Game changer! Thanks so much!

Seems to be a nearly universal 10:1 ratio.....do the same but peer through one eye at your elevated thumb while looking at a far-away object...and then close that one-eye and open the other one. The amount your thumb appears to "jump" horizontally at distance is sbout 1/10 the actual distance away. This seems to work as the normal human eye spacing between pupils, is about 66mm (+/-)....and the arm's length distance holding up your thumb is about 660mm away from your eye.... hence 10:1. Of course every person is built differently but in most cases these 2 dimensions seem to truncate to a nearly universal 10:1 ratio......this method afterall is an "estimation" of distance.

This should be in every bow hunters pocket

u r great, sir.i wish if u were my school teacher. much love

brilliant explanation. thank you

I use my Hand and Index finger to find the distance. It's easy.. First I hold the Laser Emitting Distance Finder in my Right Hand.. and then using my Index finger I press the Button. The laser beam shoots towards the target and bounces back and I get an Exact Reading of the distance on my Laser Range Finding Meter.. :) Easy Peazy.. :)

I use a more simple technique: I look at the object in the distance and think: that object is so freaking far away from me. Or - this object is not so much far away. And you know, every time I double check the distance approaching the object, I am always so amazed: my calculations never failed.😂

Very important to measure your Arm & Thumb. I was using a A/T ratio of 30, stated as standard on a web site; but my guestimates were way off compared to more accurate measurements.

Great explanation!

Fantastic ❤❤❤❤❤ Thank you

Interesting, thank you 👍

I was interested for almost 24 seconds and then he had to whip out the pen and paper and *M A T H S* :( edit: should have searched "way to measures distance without too much math"

Yeh it's always been that way

You have made a very simple rule of thumb very different to understand.

And if I do not have paper and pen to make all this calculations?

Cool!

How is the height 1.8mm if it’s the same width as your thumb and your thumb is 27mm?? How did you get the height??

Interesting, but other from human and building, as we have known how tall they are, I think further application of this method need to work on more, like how to measure tree height with you thumb or so

is he using small angle approx in the first step?W over L should be tangent of theta right?

How do you do it if the object i am trying to find my distance from appears less than the width of my thumb. Feel like I am being stupid but can’t get it.

👍

Cool

nice

Brill!

Radians? It's all about ratio. A:B::C:D a/b=c/d a=bc/d More accurate if one were to use a notched stick or bone instead of the thumb 👍

I was interested in learning the rule of thumb. Was not getting it. Then I came here. DUH!

O.k. but what if you dont know the hight of the storeys and the distance ?

Of OThumb = OMom what?

Now I feel like I love maths....😜😜

seemed cool but sux that you gotta know the height of the object at a distance.. i was hoping more for how to use my location to determine how tall they are compared to my thumb.. not how far from me they are..

Problem is all these methods rely on knowing the height of the refernce object. A human or known object is fine but what if yor object is unknown?

THX I CAN CALCULATE THINGS BETTER

Love the math but the geometry gets complicated. I prefer the modified mil-ranging formula that only requires simple algebra.

ya Allah taqdirkanlah sniper.mereka akan menghadapi masalah dn keusakaran berfikir kerana terkesan dgn bunyi berdesing dalam tempoh yg sgt.lama menyebabkan mereka.ini ibarat.manusia yg sedang mabuk. Dn tidak.mampu berfikir secara.tetap

Sir i was scrared that how u got theta , but then realised its sin theta can u plzz mention it bcz students like me take 2days to understand

On my way to BassPro to buy a device that tells me the distance so I can shoot squirrels.

FORGET IT ! i'll stick to how many minutes it takes me to walk long distances

😭 mathematics😂

Heard from a Cajun that it was the allowable width of the stick you could beat your spouse with.

My thumb/arm is 1/25. So i guess 25 is the number gonna follow me the rest of my life😅

Rule of👍🏼

That he knows what he is talking about makes me realize I am a neanathol. Moving on!

Very interesting, but if you want impress a girl at bar.. Good luck 😂😂.. But again very interesting

I'm lost

To use this very simple "rule of thumb" first take a few years of college trigonometry, make sure to have a note book and calculator, and hope you never need to use it because by the time you figure out the distance you'll be too confused to care what the distance is.

Anyone during quarentine?

This is so much simpler when adopting the military version of using mils to measure angles rather than degrees - 6400 mils in a full circle When using mils the subtension rule is 1 mil equals 1 meter at 1,000 meters

I have a wide thumb

Did joe die

This doesn't work for carpenters who have bad aim with a hammer..

NO METRIC!

wait... the "rule of thumb" DOES NOT derive from the old custom of beating your wife with a stick no larger in diameter than your thumb? well... i completely did not understand that saying

Try to use language that people generally understand. Mathematics is too specific and exclusive.

Such sloppy handwriting, mixing printing with cursive. Please slow down and write this stuff out clearly. Other people are trying to interpret your chicken scratches.

This is WHY Physicists are always Full of Crap! The EASY WAY (I was taught this in USAF Pilots Survival Class), so I didn't invent it and NEITHER DID THIS Quack Phys! - You want to know a distance to a point without a Field Compass or any other device (including Algebra). 1) Face that point, and hold out your arm (Right or Left) and hand STRAIGHT with your Thumb Up and One of your eyes closed. NOTE THE POINT in the distance that your Thumb OBSCURES. Then Open your OTHER EYE and close the first one, now NOTE THAT the position your thumb covers is DIFFERENT, and Note that Point. THIS IS CALLED "PARALLAX". Now estimate that distance between the two NOTED POINTS by using the width of Trees, Houses, Cars (length), or other familiar landmarks. 3) Take that ESTIMATED width between the TWO THUMB POINTS and ADD A ZERO (0). So, if the estimated width was 30 (American) feet, the distance away is 300 FEET! Estimated Width is 100 feet, then the distance is 1000 Feet away. (Same works with that stupid Metric system). You'd be surprised to find, UNLESS YOU'RE A DUNCE at estimating, you will be within 10% CORRECT!! BTW ---- THIS IS CALLED THE ORIGINAL "Rule of Thumb" as used in Ancient Europe some 2,000 years ago, INCLUDING by the Roman Army; our ancestors were pretty damn smart (unlike Australian Physicists!) (Me - PhD. Evolutionary Paleontologist, Univ of Chicago, USAF Capt. ret. 20th SOS, 27th Spl Ops Wing, 20 years, Nam 1970-73)