Details
A Galilean thermometer,
13in. (33.7cm.) high; a Geissler tube with uranium glass twists and Catherine wheel centres, with elongated bulbs and valves -- 16in. (42.5cm.) wide; another Geissler tube with twist and snake centre; and a double bulb radiometer with blue knop, on wood stand -- 13in. (33.7cm.) high (4)
13in. (33.7cm.) high; a Geissler tube with uranium glass twists and Catherine wheel centres, with elongated bulbs and valves -- 16in. (42.5cm.) wide; another Geissler tube with twist and snake centre; and a double bulb radiometer with blue knop, on wood stand -- 13in. (33.7cm.) high (4)