The Chinese 'biocular' has two eyepieces into one objective, and the British distributor seems unaware that 'biocular' is already used, to describe 'one eyepiece for two eyes' - like looking through a 4 inch magnifying glass with both eyes.
As Mike noted, the Japanese made something of the 'two eyepieces - one objective' variety, which I've only seen in pictures. I have also seen a European made 'two eyepieces - one objective' unit, that looked about 1920s.
Mike didn't have an image of the Miyauchi on his site yet, so I'll post an address where an image can be found. I like the design, though there has been some discussion on astronomy lists that it is rather effete - some people only like black (which I think is a mistake, it ensures the binocular will get overheated in the sun.)
A wide angle 7 x 50 will be a very welcome addition; Zeiss made the excellent 7 x 50 'Artl' during WWII; and the Bushnell 7 x 50 Custom was very good; but overall the 7 x 50 WA has been very neglected, and other Japanese models I've seen have been poor quality.
http://www.oberwerk.com/bigbinos/images/m7x50-3.jpg 7x50, 9.5°FOV, Apparent FOV is 68 degrees, individual focus, nitrogen filled, waterproof. Possibly about $700. "the eyepieces have hemi-spherical lenses" (hemispheres! what will they think of next?)
Subject: WWII AAA Searchlight Binocular Mount
From: "Lucas, Gene" <gene.lucas@___ell.com>
Just bumped into this web page (have not fully explored what's here), on WWII anti-aircraft (AAA) units,
which has scans of the manual for a WWII anti-aircraft searchlight
TM 5-7144, 60 inch GE 1941 Searchlight
Includes pages on the binocular mounting (appears to be standard 7x50 or similar):
Shows overall view of searchlight equipment, including binocular mount (control station):
Here is a commercial (Swedish?) web site featuring high-end military type gyro stabilized binocular systems:
(Have not fully checked this one out, but it looks like Government expen$ive level!) Neat to look at, though.
Like a former US Senator was found of saying, "A Billlion here and a Billion there, pretty soon you're talking REAL
An extensive site with lots o' info on binoculars -- many links:
Binocular List #273: 26 October 2003