Granite Geek - Latest Comments in Of triangles, circular manhole covers, and Reuleaux polygons

Re: Of triangles, circular manhole covers, and Reuleaux polygons

gene porter — Wed, 09 May 2007 01:39:23 -0000

Old Nashua triangular manhole cover (s?) being auctioned this Saturday at Nashua Historical Soc; at/near Abbot House

Re: Of triangles, circular manhole covers, and Reuleaux polygons

Dave Brooks — Tue, 08 May 2007 12:54:43 -0000

The Telegraph doesn't include photos with its archived stories, alas. There was a picture in the paper. But I found a site that has an old story of mine about the subject, with a photo:
http://images.google.com/im...

Re: Of triangles, circular manhole covers, and Reuleaux polygons

Adam — Tue, 08 May 2007 12:17:36 -0000

I forgot to ask, any pictures of the triangular manhole covers available?

Re: Of triangles, circular manhole covers, and Reuleaux polygons

Adam — Tue, 08 May 2007 12:16:18 -0000

Dave, a very interesting story! I hadn't heard of this before. Thanks.