Day 21 Tuesday Another project; this one is a spot finder. I am sure there is a technical term for a protractor sight for doing triangulation but I just call it a spot finder. The basic idea is that the board has angles marked from the back, in this case in 5deg intervals; a front sight; and two armatures with sights attached to the rear origon point using a pin that acts as a rear sight.You line up the front and rear sight with an object then without moving the device swing the arms so each lines up from rear sight and arm sight and gives an angle reading. Now you have 3 points of refrence to find where you are standing again. Coupled with either a range finder or compass and you can make a diecent feature map. The more sight lines you refrence the more accurate you can be.Unfortunately this one is not finished. It still needs front and rear sight pins/screws, and assembled. There are extra lines originated from the front too, these were a mistake that are now just decorative. The last pic is a mock up with some screws I had lying around, but hopefully you get the idea.I'm using the hook to twist mechanics wire to make the arms. They can be made of anything really, but I had a ton of this thin wire lying around. I remembered how the wire warp holders in the heads of my mother's loom were twisted and thought I'd try it for this.