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Giles Three Needle Test (Incomplete)
ORTHOPTIC INSTRUMENTS
diagnostic test
Europe: United Kingdom
20th c.
metal
1999.228
ORTHOPTIC INSTRUMENTS
diagnostic test
Europe: United Kingdom
20th c.
metal
Two components from a needle test, comprising one needle on a sliding arm (for mounting on a square-sectioned rod) and a wide-slit aperture.
1999.228