Details
A double bulb radiometer,
with green knop, baluster column and spreading foot -- 13in. (34.3cm.) high; and a similar clear glass double bulb radiometer with amethyst knop (B) (2)
with green knop, baluster column and spreading foot -- 13in. (34.3cm.) high; and a similar clear glass double bulb radiometer with amethyst knop (B) (2)