细节
A pair of 19th-Century parabolic reflectors,
unsigned, with 16in. (40.6cm.) dia. copper hemispheres, mounted on adjustable pillar supports with brass butterfly-wing nut attachments, the ebonised stands with screw clamps, baluster-turned supports and 12in. (30.5cm.) dia. bases -- 37in. (94cm.) high in lowered position
See Illustration (2)
unsigned, with 16in. (40.6cm.) dia. copper hemispheres, mounted on adjustable pillar supports with brass butterfly-wing nut attachments, the ebonised stands with screw clamps, baluster-turned supports and 12in. (30.5cm.) dia. bases -- 37in. (94cm.) high in lowered position
See Illustration (2)