細節
An aneroid barograph,
the silvered dial signed Stanley LONDON, No. 1749, the fine blued-steel pointer with 'spade' end, with altitude cursor and suspension loop, 4½in. (11.4cm.) diam.
the silvered dial signed Stanley LONDON, No. 1749, the fine blued-steel pointer with 'spade' end, with altitude cursor and suspension loop, 4½in. (11.4cm.) diam.