You are the first person that i have watched that actually made correct use of the mirror. I have that same compass and the mirror has always been a mystery of how to use it. So thank you very much for your good advice. i happen to know a good deal about surveying tools but that mirror has had me stumped for a long time. So now I can make a note of this and put it with the compass to use again at another time.
I bought two of those Chinese Brunton copies and found that they are well designed, rugged and well made EXCEPT the hinge is terrible and causes the alignment to wobble. I improved the hinges by substituting the crummy hinge axles for solid metal axles and now my compasses are more useful and more rugged than is my real Brunton Compass that I bought over 50 years ago. My plastic Brunton knockoffs are much lighter than the solid metal Brunton and they aren't nearly as easily damaged as the real thing is. If you are a geology student, you won't have the "prestige" of owning a Brunton, but you will have the full functionality of a Brunton at a tiny fraction of the price.
If you get the mounting bracket that lets you mount that to a tripod, then that hole in the mirror will be like a plumb bob if you have to use a control point such as an existing surveyor's mark.
It's really interesting. But you should check the manual for the military M2 artillery compass. It basically the same except the M2 is in mils. The manual show you can use it in several ways. If you want to shoot an azimut using the mirror the same way as with a Suunto MC-2 for example, you need to use the south needle as your indicator of azimut.
I have one of these from my grandfather who passed, it appears to be very old, likely korean war era. the central needle doesn’t float or spin at all, just seized in place. does that essentially render it useless?
I don't know if you've resolved this issue or not, but it's possible your compass has a "needle lock" or "stopper" whose purpose is to freeze the needle (for measurement accuracy and for protecting the needle during transport). Look for a button, pin, or lever of some kind on its side to unstick the needle.
The pocket transit is called a "transit" because it is legally considered one. The accuracy when operated with care should be within 1/2 degree. The easiest way to use it as a transit is to get one of the little tripods. That lifts it well up. You can then lay both the mirror and sighting arm out level with peep sights up vertical. With the transit level you can get very reasonable accuracy. Bruntons were developed for use in exploratory geology and prospecting, so their accuracy was important. One trick with the clinometer for quick slope measurements is to open the sight arm out straight of very slightly elevated. Find a target on the slope that looks to be about the same distance above the ground as your eye. Angle the mirror so holding it up, with the body tilted 90 degrees, you can see the clinometer and level reflected in the mirror, bubble up, scale down. Look through the sighting arm peep sight and the hole in the mirror and find your target. Holing your view there, adjust the clinometer until you see the bubble level in the mirror. Then read the slope off the scale. The Brunton design is very flexible. Mil scale versions were made for military use.
"The pocket transit is called a "transit" because it is legally considered one." Uhh... what? What do you mean 'legally considered one'... they are not recognized as acceptable forms of measurement to establish boundaries in most countries. The courts would toss your survey out faster then a turkey in november here in America. "The accuracy when operated with care should be within 1/2 degree." Try to avoid using fractions of a degree. Stick to minutes and seconds, it'll makes you sound less ignorant.
@@OnTheMountain In some states, you can conduct a "survey" with one, and if you do, your accuracy is your responsibility. You can be held accountable for errors made. If you are using a compass, there's no equivalent responsibility attached. The Brunton is considered accurate to 1/2 degree. A typical base plate compass like the Silva Ranger or the Suunto equivalent has a published accuracy within 2 degrees. Bruntons were developed to accomplish things like setting the corners of mine claims. Maping strikes and dips of ore bodies and similar tasks a mining engineer would undertake. So, when you find an historic claim marker in the desert, the claim description may very well have been developed with a Brunton. Things aren't quite so rough and ready these days, but using a pocket transit for a job will commit you to meeting higher expectations from the client and expose you potential liabilities. I've been there. These days, most people regard a pocket transit as just a glorified compass, but they are considerably more than that. There is a reason the Brunton is a pocket "transit" while a Silva Ranger that nominally gives you the same functions is a "compass."
Interesting, I've never really known how people use these things. For this particular application, as long as you set the correct declination, any quality navigation compass (with a sighting mirror) would have done the trick, but by using a slightly different method.
Laughed out loud at the tin foil hat comment! We have the pins set on our land but that tool would be helpful to find the lines as you said.Be well D2S family :)
You are the first person that i have watched that actually made correct use of the mirror. I have that same compass and the mirror has always been a mystery of how to use it. So thank you very much for your good advice. i happen to know a good deal about surveying tools but that mirror has had me stumped for a long time. So now I can make a note of this and put it with the compass to use again at another time.
I bought two of those Chinese Brunton copies and found that they are well designed, rugged and well made EXCEPT the hinge is terrible and causes the alignment to wobble. I improved the hinges by substituting the crummy hinge axles for solid metal axles and now my compasses are more useful and more rugged than is my real Brunton Compass that I bought over 50 years ago. My plastic Brunton knockoffs are much lighter than the solid metal Brunton and they aren't nearly as easily damaged as the real thing is. If you are a geology student, you won't have the "prestige" of owning a Brunton, but you will have the full functionality of a Brunton at a tiny fraction of the price.
If you get the mounting bracket that lets you mount that to a tripod, then that hole in the mirror will be like a plumb bob if you have to use a control point such as an existing surveyor's mark.
It's really interesting. But you should check the manual for the military M2 artillery compass. It basically the same except the M2 is in mils. The manual show you can use it in several ways. If you want to shoot an azimut using the mirror the same way as with a Suunto MC-2 for example, you need to use the south needle as your indicator of azimut.
I use the same transit to point a weather satellite dish. It validates the alignments I make with a phone.
I have a brunton m2 transit my Dad gave me, still use it today for backpacking
I have one of these from my grandfather who passed, it appears to be very old, likely korean war era. the central needle doesn’t float or spin at all, just seized in place. does that essentially render it useless?
Yeah I think so..wonder if you could get it repaired?
I don't know if you've resolved this issue or not, but it's possible your compass has a "needle lock" or "stopper" whose purpose is to freeze the needle (for measurement accuracy and for protecting the needle during transport). Look for a button, pin, or lever of some kind on its side to unstick the needle.
Is the case of this "Brunton type" compass made out of metal (aluminum, brass...) or plastic?
This one is plastic.
The pocket transit is called a "transit" because it is legally considered one. The accuracy when operated with care should be within 1/2 degree. The easiest way to use it as a transit is to get one of the little tripods. That lifts it well up. You can then lay both the mirror and sighting arm out level with peep sights up vertical. With the transit level you can get very reasonable accuracy. Bruntons were developed for use in exploratory geology and prospecting, so their accuracy was important. One trick with the clinometer for quick slope measurements is to open the sight arm out straight of very slightly elevated. Find a target on the slope that looks to be about the same distance above the ground as your eye. Angle the mirror so holding it up, with the body tilted 90 degrees, you can see the clinometer and level reflected in the mirror, bubble up, scale down. Look through the sighting arm peep sight and the hole in the mirror and find your target. Holing your view there, adjust the clinometer until you see the bubble level in the mirror. Then read the slope off the scale. The Brunton design is very flexible. Mil scale versions were made for military use.
"The pocket transit is called a "transit" because it is legally considered one."
Uhh... what? What do you mean 'legally considered one'... they are not recognized as acceptable forms of measurement to establish boundaries in most countries. The courts would toss your survey out faster then a turkey in november here in America.
"The accuracy when operated with care should be within 1/2 degree."
Try to avoid using fractions of a degree. Stick to minutes and seconds, it'll makes you sound less ignorant.
@@OnTheMountain In some states, you can conduct a "survey" with one, and if you do, your accuracy is your responsibility. You can be held accountable for errors made. If you are using a compass, there's no equivalent responsibility attached. The Brunton is considered accurate to 1/2 degree. A typical base plate compass like the Silva Ranger or the Suunto equivalent has a published accuracy within 2 degrees.
Bruntons were developed to accomplish things like setting the corners of mine claims. Maping strikes and dips of ore bodies and similar tasks a mining engineer would undertake. So, when you find an historic claim marker in the desert, the claim description may very well have been developed with a Brunton. Things aren't quite so rough and ready these days, but using a pocket transit for a job will commit you to meeting higher expectations from the client and expose you potential liabilities. I've been there. These days, most people regard a pocket transit as just a glorified compass, but they are considerably more than that. There is a reason the Brunton is a pocket "transit" while a Silva Ranger that nominally gives you the same functions is a "compass."
Interesting, I've never really known how people use these things. For this particular application, as long as you set the correct declination, any quality navigation compass (with a sighting mirror) would have done the trick, but by using a slightly different method.
Thanks for the tutorial. Keep the content coming..... 👍
I believe you set the declination to the wrong side. This compass is quite different.
Great video! Thanks for share it
$700 + is steep price but I really want this it’s sick
Keep up the videos
Laughed out loud at the tin foil hat comment! We have the pins set on our land but that tool would be helpful to find the lines as you said.Be well D2S family :)
The word Man actually means Earthling. So… shouldn’t be offensive.
checked with GPS? Civilian GPS min error set by law is 9 feet, Brunton is many times more accurate.
This is a Brunton knockoff.
Time for a hair cut
C'mon man! Tin foil hats are used SPECIFICALLY because they are NOT magnetic. Jeez!