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'Tempryte' crossed cylinder confirmation test 20th c. View |
'Tudor' crossed cylinder instrument & case UK Ophthalmic Products c.1953 View |
crossed cylinder 20th c. View |
crossed cylinder John Weiss & Son Ltd Mid 20th c. View |
crossed cylinder confirmation test 20th c. View |
crossed cylinder confirmation test 20th c. View |
crossed cylinder confirmation test mid 20th c. View |
crossed cylinder confirmation test 20th c. View |
crossed cylinder confirmation test Hamblin mid 20th c. View |
crossed cylinder confirmation test 20th c. View |
crossed cylinder confirmation test Rayner Late 20th c. View |
crossed cylinder confirmation test 20th c. View |
crossed cylinder confirmation test mid 20th c. View |
Pair of crossed cylinders M. Wiseman & Company Ltd 20th c. View |
Pair of crossed cylinders M. Wiseman & Company Ltd 20th c. View |
Pair of crossed cylinders and case 20th c. View |
set of Freeman-Hamblin crossed cylinders Hamblin Instruments 1986 View |
three crossed cylinders 20th c. View |