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<p>[QUOTE=&quot;afantiques, post: 103879, member: 25&quot;]I have had similar. It is a standard aneroid barometer of about 1900. The French invented the type and were main makers, exporting them to Britain and all over Europe. Fairly soon many countries started making this type of mechanism in a multitude of different cases. The adjusting screw on the back is to adjust for the height to correct to a sea level equivalent pressure.</p><p><br /></p><p>THis would appear to be a pretty utilitarian model.[/QUOTE]</p><p><br /></p>

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