Rangefinders - how they work

Welcome to the Leverguns.Com Forum. This is a high-class place so act respectable. We discuss most anything here ... politely.

Moderators: AmBraCol, Hobie

Forum rules
Welcome to the Leverguns.Com General Discussions Forum. This is a high-class place so act respectable. We discuss most anything here other than politics... politely.

Please post political post in the new Politics forum.
Post Reply
User avatar
AJMD429
Posting leader...
Posts: 31933
Joined: Sun Sep 09, 2007 10:03 am
Location: Hoosierland
Contact:

Rangefinders - how they work

Post by AJMD429 »

http://precisionrifleblog.com/2013/10/2 ... ders-work/

Really nice article and the author explains and illustrates it well.

The thing that amazes me is that we have cheap 'clocks' able to measure the amount of time it takes light to travel a few yards at most. Light travels at 299,792,458 meters per second, so that requires clock speeds accurate in billionths-of-a-second.... :shock:
Doctors for Sensible Gun Laws
"first do no harm" - gun control LAWS lead to far more deaths than 'easy access' ever could.


Want REAL change? . . . . . "Boortz/Nugent in 2012 . . . ! "
JerryB
Advanced Levergunner
Posts: 5493
Joined: Mon Apr 02, 2007 9:23 pm
Location: Batesville,Arkansas

Re: Rangefinders - how they work

Post by JerryB »

Deep Doc, Really deep.
JerryB II Corinthians 3:17, Now the Lord is that Spirit: and where the Spirit of the Lord is, there is liberty.

JOSHUA 24:15
User avatar
Old No7
Advanced Levergunner
Posts: 3572
Joined: Tue Dec 18, 2007 9:06 pm
Location: Southern Maine

Re: Rangefinders - how they work

Post by Old No7 »

Funny, your post reminded me of this old quote...

"If the enemy is in range -- so are YOU!!!"

:wink:

Old No7
"Freedom and the Second Amendment... One cannot exist without the other." © 2000 DTH
User avatar
Old No7
Advanced Levergunner
Posts: 3572
Joined: Tue Dec 18, 2007 9:06 pm
Location: Southern Maine

Re: Rangefinders - how they work

Post by Old No7 »

Actually, that was a really good article with very clear illustrations that showed things I'd only read about before, but clearly "saw" and better understood thanks to those images.

So now I'm thinking the rangefinder works just like my sonar "fish finder" but without water and the scrolling chart, but some of the same issues/challenges remain -- beam spread, different bottoms (distances) shown as "one" target, interference (fish, bait, thermocline) or target size, etc.

Pretty cool article, thanks for sharing it! :wink:

Old No7
"Freedom and the Second Amendment... One cannot exist without the other." © 2000 DTH
User avatar
Paladin
Senior Levergunner
Posts: 1853
Joined: Mon Jan 21, 2008 9:55 am
Location: Not Working (much)

Re: Rangefinders - how they work

Post by Paladin »

Good post, Thanks. Ended up with a Sig 2000 a few months ago, good price and after I got was able to range targets to 2300 meters so works GREAT.
It is not the critic who counts
User avatar
Blaine
Posting leader...
Posts: 30495
Joined: Mon Dec 17, 2007 2:22 pm
Location: Still Deciding

Re: Rangefinders - how they work

Post by Blaine »

I had a mid-priced range finder. A 275ish dollar Bushnell. Worked really good until you got in the woods. The 4 or 5X optics were really dark, and it would give false readings on every dang tree between me and what I was rangeing, even in the close 50 to 100 yard range.
The Rotten Fruit Always Hits The Ground First

Proud Life Member Of:
NRA
Second Amendment Foundation
Citizens Committee For The Right To Keep And Bear Arms
DAV
User avatar
Griff
Posting leader...
Posts: 20803
Joined: Sat Mar 31, 2007 4:56 pm
Location: OH MY GAWD they installed a STOP light!!!

Re: Rangefinders - how they work

Post by Griff »

Feeling reflective Doc?
Griff,
SASS/CMSA #93
NRA Patron
GUSA #93

There is a fine line between hobby & obsession!
AND... I'm over it!!
No I ain't ready, but let's do it anyway!
Post Reply