Plumb line on top of CN tower Ontario,Canada http://ift.tt/1IgwkGf
by Lalith Senanayake Cn tower in Ontario is a plce to see,
At top floor you find this plumb line to show the movement of the tower against gravity line
Surveyor Submitted Photos from Around Planet Earth
Plumb line on top of CN tower Ontario,Canada http://ift.tt/1IgwkGf
by Lalith Senanayake Cn tower in Ontario is a plce to see,
At top floor you find this plumb line to show the movement of the tower against gravity line