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The smaller measures 4 1/2" wide x 2 1/2" tall
His head measures about 3" wide
The only flaw on this otherwise excellent condition basket
It's seen some use
German Oculus Placido Disk or Keratoscope Opthalmologist Tool antique handicraft The smaller measures 4 1/2"I bought this old Placido Disk, or Keratoscope, not knowing exactly what it was, because it reminded me of Duchamp's "Rotoreliefs," and also because I thought it could serve as a great prop for all sorts of things, including perhaps a low budget Sci Fi film! I've since learned that this device, invented in the late 19th century, is an ophthalmic instrument used to assess the shape of the anterior surface of the cornea: a series of concentric rings is
