Sterling Silver English Antique Pocket Barometer A&N.C.S.L 5103

The Sterling Silver English Antique Pocket Barometer A&N.C.S.L 5103 is a rare and valuable scientific instrument from the pre-1930 era in the United Kingdom. Made by the reputable maker PW, this barometer showcases the craftsmanship and expertise of antique scientific instruments. Its compact size and intricate design make it both a functional tool for measuring atmospheric pressure and a decorative piece with historical significance. This pocket barometer is a unique and sought-after collectible for those interested in antiques and scientific instruments.Works to the best of my knowlege (see video) air pressure bag test. Has maker marks