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Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Cover of Watson varifocal lens Model 75/6.7 (No 206), manufactured by Watson & Son, Barnet, London, England, 1948.
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Cover of Watson varifocal lens Model 75/6.7 (No 206), manufactured by Watson & Son, Barnet, London, England, 1948.
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Hand written inscription inside cover of Watson varifocal lens Model 75/6.7 (No 206), manufactured by Watson & Son,
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Inside view of cover for Watson varifocal lens Model 75/6.7 (No 206), manufactured by Watson & Son, Barnet, London,
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum