off topic - maybe?

Glen Aspen_2

Chicago rod, or Frisco rod - as they pertain to surveying, would any of you have the historical info? Just curious? How they came to be named such, is it somehow related to the three major surveys done across NA in the 1800's?

John@Reliable_23

This will help you...............

http://www.tpub.com/content/engineering/14069/css/14069_397.htm

Maine Ken

A Chicago Rod is a unit of land measure that is extremely crooked.

A Frisco Rod is a unit of land measure that constantly bends to the left.

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Glen Aspen_2

thanks -

but the reason I ask is that here in Canada the terms are not known - but still show up in various training materials. Even to my son inlaw (geomatics engineer)- the terms are unknown. Which leads me to wonder if they have significant historical importance dating from the railway construction days of the late 1800's. Just thinking out loud I guess.

Unknown

and the Maine rod..

Is straight and pure? I do agree with the Chicago rod as im from the area...

bill nye_3

rods and chains

I found this,

http://www.math.ucr.edu/home/baez/inches.html

I remember reading about early surveying and was amazed at the task of map making etc.

Maine Ken

rjbphd, easy now. Tongue firmly in cheek.

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