Posted 3 years ago
I found this item at a yard sale and nobody knew what it was, although several of us stood around discussing it for about half an hour. Is it some sort of map plotting device; surveying; navigation tool; for drafting; or...?
The only maker mark on it is "OMEGA PAT PEND" and presumably the various "A. BAKKE" stamps refers to the name of the owner.
The "legs" on each end swivel to adjust height and the center part rotates 360 degrees. The center fastener is for the rotational hub, the offset one attaches the handle/arm to the wheel, and the one on the end of the arm doesn't seem to serve a purpose although it is threaded and removable - perhaps suggesting a placeholder plug for an attachment?
The V-notch on each end by the "legs" is very curious. To hold a pencil lead or scribe? Sight-lines? There's marks that line up the notches on both ends with the marks on the wheel.
The bar measures 1.5" wide by 7" long and the wheel is 3.75" in diameter. Each small square on the mat background is 1cm square (or approx. 3/8").
It's very solid and robust weighing in at 920 grams (32.5 oz = 2 pounds). Does anyone know its purpose and what it's called?