- Case of test lenses
- ED.CS.2023.98
- McKechnie & Jack Ltd (Manufacturer)
- Case of test lenses. Colour coded red for concave lenses and black for convex lenses. All lenses set into numbered slots. Plaque on the inside of the case reads 'Supplied by McKechnie & Jack Ltd. Dispensing opticians, Castle Street, Edinburgh'.
Width: Case 51.5 cm