I should add that the Folded-Paper Horizontal & Vertical-Polar Dial can also be made with just one fold: . A 2:1 paper rectanble is folded at its middle in a right-angle. . The fold is held by a thread connecting the middles of the top-edges of the two squares. . A nodus (bead or tied-short-thread) is at the middle of the connecting-thread. . For morning or afternoon, the dial is held with one square vertical and the other horizontal. For both morning and afternon, of course the horizongal square needs a horizontal dial drawing on it, and the vertical square needs a vertical-polar dial drawn on it. . So, it would be necessary to have separate pairs of dials drawn on the two sides of the rectangle, one for morning and one for evening. . That would necessitate adjusting the connecting-thread. The connecting-thread could be in the form of a loop, so that the fold could be reversed, using that same thread-loop. That thread-loop could have a nodus on each of its two opposite sides, so that the noduc could be correctly-positioned in morning or afternoon. . Of course, with both sides of the paper needed for the dials, a separate piece of paper would be needed for the tabulated EqT, and the tabulated decination or ecliptic-longitude. . 48 Su November 24th 2230 UTC . Michael Ossipof
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