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headband trial frame
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
Keeler
Europe: United Kingdom
Mid-Late 20th c.
metal; polythene plastic
2004.646
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
Keeler
Europe: United Kingdom
Mid-Late 20th c.
metal; polythene plastic
Trial frame. White metal. Semi-cylindrical browbar adjustable for PD and nasal height by milled wheel. Round eyes, each with triple drop-cell to front and single drop-cell to back. Semi-circular white scales. The whole attached via ball and socket joint to white polythene headband of adjustable size.
2004.646
Gift of Mr Brian Mitchell, FBDO, 2004