- Box of trial lens set, full apperture
- ED.CS.2017.93
- John Trotter (Manufacturer)
- Brown leather box containing ophthalmological test lenses, manufactured in Glasgow by John Trotter Ltd. The set includes 139 lenses, consisting of metal rimmed convave and convex sphere lenses, cylinder and spherical lenes, prism and accessory lenses. The set includes optical metal trial frames and an optical ruler. John Trotter set up business in Gordon Street, Glasgow in the 1880s with a branch opening in Edinburgh in the 1920s. Trotter was a pioneer in many branches of optical science and he also advised hospitals on the instillation of X-ray apparatus.
Height: Box 6 cm
Width: Box 27 cm
Depth: Box 40 cm