AC6........my Dad was a professional surveyor and occasionally, he'd "hire" me to be his "rod-man".
While most transits use an 8-power scope, occasionally they have a 12-power scope. Everytime he took a reading, the damm plumb-bob would start swinging in the wind. He'd haffta "swing" the transit 180-deg to make certain the transit was LEVEL. Hardest part of me being a rod-man was keeping the rod "STEADY". Most distances were 1/4-mile (660-ft) or less. Man, I HATED draggin' that metal chain 'cuz it was 8-links. (12-ft to link) And iff'n yer eyeballs are good enuff to read 8-inches in 1-mile, better hang a plumb-bob from yer pecker and hire out as a surveyor.......the hung Dell
BTW.......they do include curvature of the earth in land or property surveys; you just gotta read the neats and bounds. They are referenced to USGS "corners" (round BRASS spots) set in the ground
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Today's Featured Article - Box Plow Blues - by Tom Schwarz. One of the first implements most tractor owners obtain is the box plow. For very little money, this piece of equipment promises to plow and flatten any hill or vale on your ranch road or farm. At least that's what I thought! As simple as a box plow appears, it can be rather challenging to make work correctly. In our sandy soils of Florida, traction is king. You can never have wide enough tires or heavy enough weights to get all the traction you want … unless you own a monster tractor. U
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