Snellen Vision Testing Cards Set for Railway, Marine and School Exams, Early 20th C. h sloan carrvinh Definitely mid-century and Italian I

Definitely mid-century and Italian I believe (the white glazed bottom is common to Bitossi)

The house is made of crate wood

6 1/2" l x 3" widest diameter

with a great sense of immediacy

Snellen Vision Testing Cards Set for Railway, Marine and School Exams, Early 20th C. h sloan carrvinh Definitely mid-century and Italian IFound in their original envelop, with Millar and Wel_ (?) Opticians on, Boston stickeron the face and instruction card still inside, this appears to be a complete, or nearly so, set of early 20th c. Snellen vision testing cards. Nineteen cards total, plus instruction card, with three of the cards showing railway signals to be read at a distance of 20 feet as these were commonly used for testing the vision of train conductors railway workers. Included: