Author Topic: Improvised Lensatic Compass  (Read 5687 times)

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Offline NORTHSTAR

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Improvised Lensatic Compass
« on: June 18, 2011, 07:50:46 PM »
This is my design of improvised lensatic compass. 3 persons were tested to used lensatic compass without stand, They get different results in getting the exact target at 50 meters distance. This design gives them accurate results. No magnetic materials near the compass. I used brass and stainless steel materials to prevent attraction from the magnet needle of the compass.

Offline NORTHSTAR

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Re: Improvised Lensatic Compass
« Reply #1 on: June 18, 2011, 08:02:02 PM »
Plump bob was used to easily get the exact level of the compass by getting vertical reference position. It is supported by water level to get the horizontal reference position. In this way, you will get the exact level of the compass to move freely.



Offline NORTHSTAR

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Re: Improvised Lensatic Compass
« Reply #2 on: June 18, 2011, 08:06:38 PM »
Adjustable knob to get the exact water level of the compass

Offline NORTHSTAR

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Re: Improvised Lensatic Compass
« Reply #3 on: June 18, 2011, 08:09:40 PM »
Dismantling the set up

Offline NORTHSTAR

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Re: Improvised Lensatic Compass
« Reply #4 on: June 18, 2011, 08:13:23 PM »
Packaging... very handy and portable. One belt bag and one sling bag..

Offline Janner

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Re: Improvised Lensatic Compass
« Reply #5 on: June 18, 2011, 08:19:11 PM »
well what have we got here now?

Aha a compass on a stationary stand. Not so new or ground breaking news...!

But...
did you firstly prior to taking any compass bearings calibrate the compass...??
and then did you..calibrate the person(s), taking the bearing, ..eyes...?


NO..??
then you really have no idea how to take a accurate bearing at all do you...??!!
All Qualified Surveyors will always calibrate the compass
and their eyes prior to any work with a sighting compass...
so...
Next...?

Offline NORTHSTAR

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Re: Improvised Lensatic Compass
« Reply #6 on: June 18, 2011, 08:19:52 PM »
How to target the compass and get the exact bearing from a tree main arrow. That mango tree has a square box sign

Offline NORTHSTAR

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Re: Improvised Lensatic Compass
« Reply #7 on: June 18, 2011, 08:27:43 PM »
well what have we got here now?

Aha a compass on a stationary stand. Not so new or ground breaking news...!

But...
did you firstly prior to taking any compass bearings calibrate the compass...??
and then did you..calibrate the person(s), taking the bearing, ..eyes...?


NO..??
then you really have no idea how to take a accurate bearing at all do you...??!!
All Qualified Surveyors will always calibrate the compass
and their eyes prior to any work with a sighting compass...
so...
Next...?

Of course the compass was calibrated carefully before it was used. A hairline difference will give you a false results especially at farther distance. With this design, the compass is stationary and the compass needle move freely at even surface. The result is accurate..

Offline Janner

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Re: Improvised Lensatic Compass
« Reply #8 on: June 18, 2011, 08:31:10 PM »
so......how did you calibrate the compass and the users eyes..???

Offline NORTHSTAR

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Re: Improvised Lensatic Compass
« Reply #9 on: June 18, 2011, 09:04:34 PM »
The best way to calibrate lensatic compass by means of aligning the index line and sighting slot. Just place the sighting slot on top of the glass then you will see if the index line is align with sighting slot. Then align the index line and the  sighting wire. Another important factor that the compass needle must be floating freely at even surface

Offline Janner

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Re: Improvised Lensatic Compass
« Reply #10 on: June 18, 2011, 09:15:18 PM »
The best way to calibrate lensatic compass by means of aligning the [u]index line and sighting slot.[/u] Just place the sighting slot on top of the glass then you will see if the index line is align with sighting slot. Then align the index line and the  sighting wire. Another important factor that the compass needle must be floating freely at even surface

I have never heard such a load of BS in all my life!!

YOU obviously have NO idea on how to calibrate a compass or the users eyes.!!!

and that is a "Fact" !!

So Mr NS aka "Janitor"..aka "Professor", aka "Surveyor extraordinaire" you have failed us yet again !!
like your previous posts, nothing can be believed.

Offline NORTHSTAR

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Re: Improvised Lensatic Compass
« Reply #11 on: June 18, 2011, 09:18:57 PM »
The best way to calibrate lensatic compass by means of aligning the [u]index line and sighting slot.[/u] Just place the sighting slot on top of the glass then you will see if the index line is align with sighting slot. Then align the index line and the  sighting wire. Another important factor that the compass needle must be floating freely at even surface

I have never heard such a load of BS in all my life!!

YOU obviously have NO idea on how to calibrate a compass or the users eyes.!!!

and that is a "Fact" !!

So Mr NS aka "Janitor"..aka "Professor", aka "Surveyor extraordinaire" you have failed us yet again !!
like your previous posts, nothing can be believed.

Now, It's your turn to explain on how to calibrate the compass, Give me your best shots ;D ;D ;D
« Last Edit: June 18, 2011, 09:21:09 PM by admin »

Offline Janner

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Re: Improvised Lensatic Compass
« Reply #12 on: June 18, 2011, 09:24:48 PM »
my turn.??

I am  not the one giving instructions on how to set up a compass and a users eyes, you forgot to tell us that one, "You" are!!

and my best shot, why was that yours.??  ::)

Offline Janner

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Re: Improvised Lensatic Compass
« Reply #13 on: June 18, 2011, 09:41:45 PM »
Sorry folks "Elvis" has left the building. ;)

so we will never know how he set up a compass and the users eyes...... ;)

DINDO BAYAUA

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Re: Improvised Lensatic Compass
« Reply #14 on: June 18, 2011, 10:37:03 PM »
Quote
Plump bob was used to easily get the exact level of the compass by getting vertical reference position. It is supported by water level to get the horizontal reference position. In this way, you will get the exact level of the compass to move freely.

Is that the primary function of the Plumb Bob in compass surveying? I wonder... Better ask your friend to teach it well. and ask what is backsighting on the compass use and orientation.