As promised, I approached the home owner.  I almost backed down, as it was after 9 pm and the house was dark except for a light in the kitchen. But, I’m glad I went ahead, as we sat and talked for hours. He is a very interesting guy! And, happily the answer satisfies Occam’s razor.  Occam's razor - Wikipedia
After explaining my curiousity, his first answer was that he liked to keep track of record snowfalls. I must have looked dumbfounded, but he didn’t let me dangling long. The real story is much more interesting.
Back story:
Mr Giantverticalrulerguy (Mr G) bought the property shortly after he married. The original house was a 10’ x 18’ shack made of rough cut lumber harvested from the property. It was covered by tar paper to make it “waterproof”.  There was no foundation, just a dirt floor. Shortly after moving in, he and his wife decided to upgrade.
So, he and a buddy began excavating around the house using picks, shovels, and a wheelbarrow. They learned as they built, leading to some funny situations. Once he had the foundation/basement built they realized that things were not level enough to begin the first floor. They corrected this gradually by adding more courses of block, so that the current house has a 12 foot ceiling in the basement!
They put a fireplace in the basement, and its chimney lasted for decades, but was not perfect.
Soooo, the chimney was torn down. At about the same time, Mr G began flying lessons. He was adventurous, and was soon flying an ultralight as well as other experimental aircraft. He bought an old garage from a neighbor (which is at the far end of his property) Here it is: http://i153.photobucket.com/albums/s218/vetbridge/hanger.jpg
His yard was a runway, but it was not a perfect runway and he wanted to improve it. He had access to some heavy machinery by this time, but could only work on his project in the evenings and weekends, and he had nobody to hold the surveying thing (he told me what it was called but I forget now) so he made the giant ruler!!!  The chimney had just been torn down, so he stuck it where it is to this day.
He has since given up ultralight flight and he has a small airplane that he has offered to take me up in!
Thanks to this thread, I have met a really cool neighbor. 