'nudder Benchmark Description question?

[Garminator]

What is the "light" that the description refers to?

 

 

(Example)...............AND IS ABOUT 3 FEET LOWER THAN THE STATION. HEIGHT OF LIGHT ABOVE STATION MARK 1 METER.

 

"I seen Elvis making crop circles"......................Are the Soprano's on yet?

[survey tech]

Such notation indicates that the point was used at night. The light was the target set up over the point. The reason for mentioning it is so that others will know what conditions they may expect to have to deal with when they use the point in the future. The higher the light, the more obtacles, usually trees or buildings, are likely to be near the point.

[Z15]

OK

 

When they did the survey that established this point, the used towers (up to 100+ ft in the air) to see over the tree's etc. They did most all of the observations at night because there were less visibility problems. The targets were 6 volt latern lights and that is how far the light was above the ground.

 

If you will notice, above the guys and out of sight is where the light would be on a typical tower and there is a light on the platform. "O" party means Observation Party. Notice the guy sitting in the photo, has one arm. Must ahve been a climb for him, nowadays he would sue for them to build him a ramp up there.

 

They did triangulation survey in Michigan back in the 1977-78 that used these towers. Our Dept. (MDOT) cooperated with NGS by supplying men and vehicles. They wanted volunteers to work on the towers but I would not to climb 100 foot towers and stay up there for 4-6 hours.

 

survey crew in action

 

[This message was edited by elcamino on December 15, 2002 at 08:40 AM.]

[+Tacguy]

" When they did the survey that established this point, the used towers (up to 100+ ft in the air) to see over the tree's etc.

 

They did triangulation survey in Michigan back in the 1977-78 that used these towers.

 

I would not to climb 100 foot towers and stay up there for 4-6 hours. "

 

 

I gotta' party with these Tower Guys!

[Z15]

Those are history, they don't do triangulation anymore. To time consuming and costly. GPS has made that obsolete.

[Garminator]

Thanks for the link and what an interesting picture!!! I get a education everyday from this forum!

 

Garminator

 

"I seen Elvis making crop circles"......................Are the Soprano's on yet?

[+Black Dog Trackers]

Here is an earlier thread on this same topic.