Bbbbut, if you take out the 4 season's, it looses its relationship to the tilt of the earth...

If you like classical music, find vivaldi, 4 seasons, and blame the tilt of the earth...

Another thing that is factual. The tilt of earth causes the seasons Spring, Summer, fall, winter. So,?ÿ In Arkansas most GLO surveys were done in wi...

A specific affect is: When the original surveyors surveyed USA, they sighted polaris, to set their magnetic declination. So, variation of earth's rel...

Just an idea. Set up in a small area, where you can use an autolevel, and a box tape. Attach prism to floor. With a tripod over it. Take your time. An...

Ours was a 1923 Adolph Lietz, San Francisco. My brother wanted it, so he's had it for about 15 yrs. It was a 20 minute vernier in the horiz, and 30 mi...

It seems from memory that the 20' unit also read seconds to 20", (direct), and the 30' model also read direct to 30". But, it's been a long time ago. ...

I like these.

Throw those coords in the trash. Was meant. Typing on tiny keyboard. With sp chk. Goofs it all up.

Under the bosses desk. If wernt for idiots like you, nobody would be the wiser..... (Kidding there) Did you wash her hands? I'm sort of kidding you,...

Un adjusted vs adjusted traverse: Traverse around a section. (Approx I mile square) closure is 2 feet, and 2-1/2 minutes of angle. This computes out ...