Rolls-Royce Archives
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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Specifications for three pieces of glass, including one with a technical drawing.

Identifier  ExFiles\Box 23\3\  Scan149
Date  19th December 1930 guessed
  
Drawing dimensions:
1/8"
1"
12 7/8
4-9 7/8"
12 7/8

One piece as above, all corners 90°. 1/4" thick glass edges as cut i.e. not polished.

One piece 27" x 19 1/4" x 3/16". The two short edges radiused and polished the other two as cut. All corners 90°.

One piece 26 1/8" x 19 1/4" x 3/16". One short edge radiused and polished the other three as cut. All corners 90°.
  
  


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