Retinoscope(?), with hinged mount for lens or perf

Retinoscope(?), with hinged mount for lens or perforated disc, English(?), 1890-1930

Details

Category:
Ophthalmology
Collection:
Sir Henry Wellcome's Museum Collection
Object Number:
A212682
Materials:
brass, nickel (plated), wood and glass
Measurements:
including handle: length 130 mm
diameter 45 mm
lens: diameter 37 mm
metal disc: diameter 40 mm
type:
retinoscopes