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Keeler Universal Transformer
OPTOMETRIC INSTRUMENTS
transformer
Keeler Optical Products
Europe: United Kingdom, England, London W1
20th c.
metal; paper
1999.4107
OPTOMETRIC INSTRUMENTS
transformer
Keeler Optical Products
Europe: United Kingdom, England, London W1
20th c.
metal; paper
Transformer. 4 jack plug sockets on side. Black on-off revolving knob and white metal on-off switch. Black and red electric flex. Also yellow paper product label printed in red.
1999.4107