University Health Network - Academy of Medicine Collection
Category
Ophthalmology
Classification
Ophthalmology
Accession Number
1979.12.7
Description
Two black metal disks, one overlapping the other; two small holes in one of them through which numbers and glass move; numbers have a plus and minus sign on either side; brass rod on back with glass top and ball bearings inside.
Two black metal disks, one overlapping the other; two small holes in one of them through which numbers and glass move; numbers have a plus and minus sign on either side; brass rod on back with glass top and ball bearings inside.
Number Of Parts
1
Provenance
Acquired from the Academy of Medicine; source: Mrs. J. Murdoch.