Diagrammatic model of 'Merton Nut' used for making

Made:
1948-1956

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Diagrammatic model of 'Merton Nut' used for making replica diffraction gratings, 1948-1956.

Details

Category:
Optics
Object Number:
1956-139
Materials:
acrylic, metal, plastic (unidentified) and steel
credit:
National Physical Laboratory.