Eye eye....
Titled "TEST TYPES" Suggested by Dr. Lloyd Edwards and published by F. Davidson of Portland Street, London
Three part eye test chart printed onto card
Each row has a distance next to it - starting with 60 metres on the top row!
The three cards are joined together (loosely!) with linen-type tape
Condition is commensurate with age with watermarks and scuffs
Size when folded: 24cm wide x 23cm depth
Size when hung: 24cm wide x 63cm length