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nasal contour measurer
OPTOMETRIC INSTRUMENTS
rule
American Optical Co
North America: USA
1889
metal
overall: 84 mm x 95 mm
1999.2764
OPTOMETRIC INSTRUMENTS
rule
American Optical Co
North America: USA
1889
metal
overall: 84 mm x 95 mm
Metal measurer consisting of eleven rods in a case with open ends. Rods lockable by pressure against metal flap with black velvet lining. Inscribed with patent number on one side.
1999.2764