On Sunday, December 4, 2016 at 10:21:40 PM UTC-5, Martin Eastburn wrote:
On 12/4/2016 2:34 AM, wrote:
On Saturday, December 3, 2016 at 11:03:57 PM UTC-5, Martin Eastburn wrote:
In my handbook of Metrology Version 1.1 By Nobuo Suga Mitutoyo Institute
of Metrology - America

Metal to ceramic is a no-no. Keep like kinds together. However
it is done...

On page 3-10 or pp 44 - steel gage block wringing to optical parallel,
wring to two Ceramic Gage Blocks (2" and 1") - then two more steel gage
blocks wringing on the end.- 5 surfaces at once.

"High degree of flatness as well as surface "roughness" are required to
achieve this Phenomenon called winging."

"The winging layer between blocks are in the range of 25 nano-meter.
or for the imperial - .000001 in."

Martin

If that photo showing the stack of mixed gage blocks is the one I think it is, it's one I shot -- of Suga's hand. g

Mitutoyo's gage-block expert (not Suga; he's head of education) is one of the people I consulted when I wrote about it. The one I quoted is a physicist at NIST, Ted Doiran.

He is holding the set in a cloth (white) glove - on the 2" Ceramic - mid
length in weight I suppose. Thumb finger with two more fingers holding
the weight. - I'm looking at my pdf version not the 3-ring manual in the
shelf.

I missed the class, but got the book. I was asked to attend to IBM's
needs for a month in Bordeaux France. Rough duty. Gained weight.
9-4pm. Hour lunch. When I wasn't there, they ate lunch with their
children if they had any. IBM Cafe was something else. French cooks
and good food, wine and bread.

I remember when I was in southwest Germany, I've never been anywhere else where there was such a strong smell of bread baking so often. I'd have loved to invite myself over to whichever house it was.