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john-nolton
@john-nolton
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Joined: July 2, 2010 6:08 pm
Topics: 27 / Replies: 536
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RE: When is an instrument better that 5" needed

Mark Mayer, post: 382374, member: 424 wrote: If you use a 1" gun in the same way you use a 3" gun, with the same tripods and tribrachs, the same glass...

8 years ago
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RE: When is an instrument better that 5" needed

Paul in PA, post: 382379, member: 236 wrote: Darn few are using a 1" or 5" gun to the described accuracy, which requires at least 2d & 2R. Recentl...

8 years ago
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RE: When is an instrument better that 5" needed

Totalsurv, post: 382349, member: 8202 wrote: On the thread below by rfc the use of a 5" instrument was questioned. I use a 5" instrument all the time ...

8 years ago
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RE: Heat

Loyal don't wimp out on me. 29 palms in the late 60's 113 F, climbing hills looking for survey control points (no problem). Yesterdaysetting grade sta...

8 years ago
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RE: Raising a State Plane Projection

MathTeacher, post: 380243, member: 7674 wrote: Some of the fundamental constants for Lambert a plane can be developed using algebra, geometry, maybe a...

8 years ago
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RE: NASA Surveyors Wanted

C Billingsley, post: 379499, member: 1965 wrote: No atmospheric correction to worry about Of course there would be a atmospheric correction.Mars ha...

8 years ago
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RE: Error in Survey?

It seems that at least one poster above thinks that the BAR SCALE is correct on the above drawing. If we use the distances inside the green figureand ...

8 years ago
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RE: Error in Survey?

You have a very poor drawing here. If you scale the numbers given in green(309.56,154.12,222.9 --the best I can read them) against say a mm scaleyou w...

8 years ago
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RE: Help with T3 legs

If its NOT used in the field where do you use it?Don't be frugal buy the correct tripod. JOHN NOLTON

8 years ago
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RE: Need advice on building a permanent observation pier

Larry Scott, I see you have not posted the weight of a battery box for the Wild T3/T2/T16 Theodolite so I will do it for you. 4lb 13.5 oz. Complete. B...

8 years ago
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RE: Need advice on building a permanent observation pier

Larry Scott, why can't you weigh the battery box yourself. Both empty and with 6 "D" cell in it? JOHN NOLTON

8 years ago
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RE: Need advice on building a permanent observation pier

Larry Scott, to be a little more precise and accurate the Wild T3 Theodolite weight is 24.6 lb. The metal container is 8.1 lb.Just in case you want to...

8 years ago
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RE: I'm ditching my clock and getting one of these ytterbium babies!

rfc, neat but I can't afford that atomic clock. I am waiting for my TAG HEUER Mikrogirder chronograph (1000) to arrive. I will use it with my Radio Sh...

8 years ago
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RE: Traverse w/ multiple "loops"

Mike J. one last question WHY the point #11 and point #1, I did not understand that. I like your pentagon so lets talk about it. First forget about p...

8 years ago
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RE: How temperature affects EDM measurements

rfcThe rule of thumb is for a change of 1.8 degree F or 1.0 degree C you will change by 1ppm. Your 500 foot distance might be off by 0.0125 feetNO big...

8 years ago
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RE: Traverse w/ multiple "loops"

Mike J.I am having trouble understanding you here in this post. First you show a figure( pentagon) with other lines.(very first post); then a later po...

8 years ago
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RE: Strategy for determining the basis of Bearings of a control network; Part II

rfc Thanks for making it clear to me about your problems with short backsight, house in the way for Polaris and for letting me know what type of instr...

8 years ago
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RE: Strategy for determining the basis of Bearings of a control network; Part II

rfc I would like to make some comments on your work. 1. When you do astronomic work it is best to have your backsight at least 1km away.2. In turning ...

9 years ago
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RE: FOR: Mike J.

Mike J. Do not forget to take some classes in surveying if you can find them in your area. Its much easier for a instructor to explain the above on th...

9 years ago
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RE: FOR: Mike J.

Mike J.Glad you came back. Since you have time and are trying to learn I would do the following. Ref. to your sketch you 1st posted;I would place poi...

9 years ago
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