Re: Size of BH's shirt pocket Message #2 Posted by Dave Shaffer (Arizona) on 1 Sept 2007, 11:46 a.m., in response to message #1 by Peter Niessen
Quote: Now the question: Can you buy rulers which will have tick marks at these distances? If not, any idea how these numbers were determined?
You can readily buy engineering rulers which are triangular in cross section and a foot long, and have six different scales along the vertices (one along each side of each vertex): 10, 20, 30, 40, 50, and 60 divisions per inch.
So, measuring with 0.1 inch tick marks would have been no challenge, especially to a group of engineers in the 1970s.
"HOW" they actually did it, I've no idea! Probably measured Bill's shirt itself, with or without him in it.
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