Sinden Optical Company

I was recently sent some very interesting documentation by Clive Elliot,who has kindly allowed me to reproduce it here. Clive bought some optics from David and was given the following documents. The first sheet is price list from around the year 2000.

The next document gives details of the test methods used by the Sinden Optical Company.

Next, David talks briefly about his great love, Grubb Parsons and reveals some interesting information about fused glass mirror blanks.

In the final document David gives an account of how an optical window is made.