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pair of magnifying eyeglasses

https://mhc.andornot.com/en/permalink/artifact13343
Dates
1920
1960
circa 1920-1960
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020221
Description
Silver metal pair of magnifying eyeglasses consist of two clear glass square lenses mounted in square brackets on top of hollow cylinders; screw-like curved piece of metal between cylinders with a ridged knob in centre; spinning knob adjusts distance of lenses from each other; lenses connect via tw…
  4 images  
Accession Number
010020221
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Eyeglasses
Vision
Dental Equipment
Description
Silver metal pair of magnifying eyeglasses consist of two clear glass square lenses mounted in square brackets on top of hollow cylinders; screw-like curved piece of metal between cylinders with a ridged knob in centre; spinning knob adjusts distance of lenses from each other; lenses connect via two pieces of rectangular metal to a piece of metal shaped with two semi-circles, to rest on the cheekbones, and a curved piece in the middle, to sit on the bridge of the nose; two cylindrical handles, covered in white rubber, with curved ends to sit behind the ears; handles fold inward to make glasses more portable.
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
American Optical Company
Site Made (City)
Southbridge
Site Made (State)
Massachusetts
Site Made (Country)
United States of America
Dates
1920
1960
circa 1920-1960
Date Remarks
Based on design
Material
metal: silver
glass: clear
rubber: white
Inscriptions
Engraved on side: "AMERICAN OPTICAL CO // U.S.A"
Permanent Location
Storage Room 0010
0010-B
Dimension Notes
Length 20.5 cm x Width 16.5 cm x Depth 6.0 cm
Copy Type
Original
Reference Types
JPG
Reference Comments
CD #10
Research Facts
Dr Ralph and Mrs Olga Crawford donated their extensive Canadian dental collection to the DCF to create the museum in 1997; further donations were received while Dr Crawford was Curator Emeritus at the Dental Canada Museum until its closure in 2008.
Images
Less detail