Or, the engineer started at 2-1/4 His boss said, "Hey dummy, we're metric" and it became 57 mm. It came to marketand Marketing got involved; it became 2-6/25", 5.7 cm.
________________________________ From: "Ressel, Howard R (DOT)" <howard.res...@dot.ny.gov> To: John M. Steele <jmsteele9...@sbcglobal.net>; U.S. Metric Association <usma@colostate.edu> Sent: Monday, February 10, 2014 9:14 AM Subject: RE: [USMA:53546] Interesting mounting template Yes I saw no reason why 60 mm would not have worked for the spacing. Neither dimension is convenient. Of course i9t could have been some Engineer just being way too precise in the layout of the design of the item. We do tend to get that way. I have Engineers that show the slope of a roadway to the nearest thousands of a foot, I dare any contractor to build it that precise. All goes back to the reliance on computers and forgetting about engineering judgment. From:John M. Steele [mailto:jmsteele9...@sbcglobal.net] Sent: Monday, February 10, 2014 8:49 AM To: Ressel, Howard R (DOT); U.S. Metric Association Subject: Re: [USMA:53546] Interesting mounting template The 2-6/25 is pretty interesting. Strict conversion of the 57 mm gives 2.2441" so it would have been a negligible error to round to 2.25 (2-1/4, using their notation). The inches are only for English-speaking Americans, and the centimeters for Spanish speaking. :) Why is 57 mm inconvenient? I suppose you would have to open the device to determine whether a "rounder" number like 50 or 60 mm was practical, or had internal interference. It does seem that one dual-labelled drawing would fit on half the paper and provide an obvious cost-save. ________________________________ From:"Ressel, Howard R (DOT)" <howard.res...@dot.ny.gov> To: U.S. Metric Association <usma@colostate.edu> Sent: Monday, February 10, 2014 8:28 AM Subject: [USMA:53546] Interesting mounting template I purchased a GE light for under my cabinet, one of these battery operated LED ones. The mounting template was interesting (see attached). One can speculate a lot here, indeed the measurements are identical but neither is convenient. Did they just plunk down two holes in the back of the mounting plate then measure what the spacing was and call it a day? I wonder why they needed to have two drawings which I did cut and paste on top of each other and verify are identical, the holes line up. Howard Ressel Project Design Engineer NYSDOT 1530 Jefferson Road Rochester, NY 14623 585 272-3372 43,560 square feet in an acre 5280 feet in a mile 16 ounces in a pound 128 ounces in a gallon 23 confused kids in a class What could be simpler?
