ALL SEX DATING
clear and disable history
Dating lemaire opera glasses
Indeed today's instruments are as easily recognizable as those produced many years ago, especially in their design shape, although the technology regarding materials, prisms and lenses has taken great leaps forward.
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The 'KO' should be followed by a number, which is the number of the Test Certificate. Other letters you may find are 'NPL' which is the National Physical Laboratory. This Arrow was used buy the British Government & Military to mark ownership. There are a few of these posters about ( mainly repro!! Look on Ebay - search the internet - look at old publications.
The letter 'N' is followed by 'P' over 'L' and a number, for instance - '43', which would mean it was tested in 1943. The sign was also used as a mark of testing, so a full Broad Arrow meant the instrument was up to standard. ), but they may make your collecting more interesting. It's amazing how many old adverts there are, and you will find them for very many binocular makers and sellers - British, French, German, American, etc These adverts also help with dating the binoculars.
Binoculars have been around and in general useand good quantity since the 1800s.
They are the bygone instruments which have been widely used for a long time now, and are still being produced today.
These binoculars could have been French, German, or from private individuals ect, wherever they could find them.
WW1'bought in' binoculars were stamped as follows:-S.1 High Grade Prismatic Binoculars S.2 Second Grade Prismatic Binoculars S.3 High Grade Galilean Binoculars S.4 Second Grade Galilean Binoculars S.5 Third Grade Binoculars Of Either Type S.6 Unusual Design Binoculars And of course they had the Ministry Broad Arrow.
Known as theater binoculars or Galilean binoculars (named for Italian inventor and philosopher Galileo), they were constructed of two telescopes with a bridge in the center that could be adjusted independently to achieve proper focus.
By the mid-19th century, opera glasses had become must-have fashion accessories for wealthy theater-goers.