An early 20thC pocket barometer by J J Wainwright & Co, the 4cm diameter dial with outer Arabic numerals, marked to the centre with an open screw back., partially cased, (AF)
An early 20thC pocket barometer by J J Wainwright & Co, the 4cm diameter dial with outer Arabic numerals, marked to the centre with an open screw back., partially cased, (AF).