William IV Cased Miniature Altazimuth Theodolite by Cox of Devonport Marine Barometer the remaining space on the

the remaining space on the barometer is what makes this instrument hugely interesting

if the Beagle had gone under a third time

an example of which is amongst the collection of the Oxford History of Science Museum

a rare early Twentieth Century mahogany cased Typhoon barometer of barocyclonometer

but also in what direction the destructive centre of the storm is moving

William IV Cased Miniature Altazimuth Theodolite by Cox of Devonport Marine Barometer the remaining space on theFor sale a rare cased Early Nineteenth Century miniature altazimuth theodolite by WC Cox of Devonport. This rare example is comprised of a horizontal four and a half inch divided circle which can be hand operated for coarse adjustment. Fine adjustment is achieved by a geared vernier which can be manoeuvred by means of a knurled brass knob at the top edge. The centre contains an expertly engraved and silvered compass with a brass catch to hold or