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<p>[QUOTE="Barn Owl, post: 631185, member: 4864"]He gave the measurements in an earlier post:</p><p><br /></p><p>"</p><p>It is 4.675" diameter .375" thick. Inner circles are 1" diameter. Found in northeast Ohio USA. </p><p><br /></p><p>We thought it was something for a projector however the four circles with patterns are completely opaque. </p><p><br /></p><p>There are words inscribed around the edge that coincide with each of the 8 circles. There is OPEN, (4) OBJECT that coincide with the symbol drawings, N for the blue disk, S for the yellow disk, and D for the purple disk. </p><p><br /></p><p>The back side of the 1" circles have a fine pitch thread.</p><p><br /></p><p>"[/QUOTE]</p><p><br /></p>
[QUOTE="Barn Owl, post: 631185, member: 4864"]He gave the measurements in an earlier post: " It is 4.675" diameter .375" thick. Inner circles are 1" diameter. Found in northeast Ohio USA. We thought it was something for a projector however the four circles with patterns are completely opaque. There are words inscribed around the edge that coincide with each of the 8 circles. There is OPEN, (4) OBJECT that coincide with the symbol drawings, N for the blue disk, S for the yellow disk, and D for the purple disk. The back side of the 1" circles have a fine pitch thread. "[/QUOTE]
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