Archived posting to the Leica Users Group, 2000/11/21

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Subject: [Leica] Re: Zeiss? periscopes (off-topic)
From: "Doug Richardson" <doug@meditor.demon.co.uk>
Date: Tue, 21 Nov 2000 21:27:46 -0000
References: <200011210801.AAA00832@mejac.palo-alto.ca.us>

Marc James Small <msmall@roanoke.infi.net> wrote:

>Most US and UK submarines of modern vintage have Zeiss periscopes.

No. British submarines traditionally have Barr & Stroud periscopes.
The company (now Pilkington Optronics) supplied the CK 33 search and
CH 83 attack electro-optic periscopes for the Royal Navy's
Swiftsure-class, while the older Oberon-class used the  CK 24 search
and CH 74 attack periscopes made back in the Barr & Stroud days.

About two or three years ago Pilkington Optronics and Zeiss entered
into a technology-exchange deal in which the two agreed to share
technologies so that each could offer periscopes with the best of both
companies' technologies when bidding to customers who were traditional
Pilkington or Zeiss users.

To the best of my knowledge, the US Navy uses Kollsmorgen periscopes,
but Pilkington and Zeiss are the two biggest players on the export
market.

Regards,

Doug Richardson