Message:

<p>[QUOTE=&quot;Barn Owl, post: 631185, member: 4864&quot;]He gave the measurements in an earlier post:</p><p><br /></p><p>&quot;</p><p>It is 4.675&quot; diameter .375&quot; thick. Inner circles are 1&quot; 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&quot; circles have a fine pitch thread.</p><p><br /></p><p>&quot;[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in