Ahmed Abo Elroos
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  • Alexandria
  • Egypt
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Ahmed Abo Elroos's Discussions

How to correct Control points Coordinates

Started this discussion. Last reply by David García Bodego Mar 31, 2016. 22 Replies

i have 2 control points created by GPS on my new project, and my Total station without Scale factor (Leica 407)So, the Orientation get 16 cm difference What should i Do?Read more →

Tags: points, Coordinates, Control, correct, to

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Ahmed Abo Elroos replied to Sibgatullah ahamd najar's discussion Leica Mini prism constant
"Dears,. Constant for Leica mini prism (EMD) can be both 0.00 OR -17.5mmwhat ever you have worked some of your setting out with any of this constant. You have to continue the rest with the same constant to avoid having this approx. 2cm…"
Oct 10, 2017

Profile Information

I am here because I am a.
Professional Land Surveyor
Surveyor Bio:
i love geography, surveying before going to collage.
and 1st. time to tell (working in four seasons hotel in Alexandria - my beloved city , made me another person with much more AMBITION...
That's why i traveled to KSA to prove my self in surveying and i'm ready to be G.I.S. specialist when time comes.
Location for Member Map
Saudi Arabia, Jeddah
Licenses Certifications or Awards
driving licenses for Egypt and GCC Countries.
I have experience with the following
boundary surveys, construction staking, topographic surveys, control network surveys, teaching, Survey Office, Construction, Other
How many years have you been surveying?
8 years
Most comfortable with the following types of instrumentation
Total Stations, GPS, Surveying Software, Automatic Levels, compass

Comment Wall (6 comments)

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At 4:56pm on December 26, 2016, Joseph Staton said…

Ahmed I hope hes us. Be very proud you have him most of us don't.

At 4:08am on March 27, 2016, Billy Brooks said…

You have a good looking son , is this new how old is he, you must be proud father.. I talked My Friend,  i must help him fill out form to join. He talks a little English, but does not under stand everything he reads

At 7:08am on March 25, 2016, Billy Brooks said…

Ahmed, Is that your son?

At 4:15am on March 23, 2016, Billy Brooks said…

Do not know if you had a manual but you do now


download this manual free

At 4:01am on March 23, 2016, Billy Brooks said…

Atmospheric correction
The distance displayed is correct only if the scale
correction in ppm (mm/km) which has been entered
corresponds to the atmospheric conditions
prevailing at the time of the measurement.
The atmospheric correction takes air pressure and
air temperature into account.
For utmost precision in distance measurements,
atmospheric correction must be determined with
1 ppm accuracy, air temperature to 1°C and air pressure
to 3mb accuracy.

At 2:47am on March 23, 2016, Billy Brooks said…

hello Ahmed, I have a real good friend who lives here in Texas like me. Me and him both have been surveying over 45 years each. He move here in the 90's, I worked with him up till 2010 he is a Civil Engineer/Surveyor/ and Agriculture ENG. Me and him have done many surveying projects for any kind of surveying .But me and him where the number one construction team for a firm here in Dallas Texas for many years. We worked very large projects and we used GPS and total stations together at same time on many jobs,  for many years. You will like to talk to him , why  because he is from  Alexandria, Egypt.I am trying to get him to join Landsurveyorsunited, if not, if you have another email,  I can give you his and you two can talk,  He is a very good person and i am sure he would help you. we have help each other for many years, We have surveyed many large buildings together. He also loves the city you two call beloved city this must be it's name.



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