On 2010-11-04, Christopher Tidy wrote:
On Nov 4, 7:27*pm, wws wrote:

Flat lapping is legitimate.
Think microns, such as optical flats.
Maybe Chinese?

I did wonder if the word was flat. Here's the pictu
http://books.google.co.uk/books?id=-...rat+lapping%22

According to Google, it's "rat". But flat or part sounds more
sensible.

Likely an artifact of the OCR and a ligature of 'f' and 'l'. I
know that "fi" used to be commonly printed as a ligature (squished
together, so the dot of the 'i' merges with the ball on the top of the
loop of a lower-case 'f' in certain type faces.

Check this web page on the subject:

http://www.will-harris.com/ligatures.htm

Enjoy,
DoN.

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