Replica reflection grating on glass base 4 x 3 x 1/2-inches (3600 lines/inch)

Replica reflection grating on glass base 4 x 3 x 1/2-inches (3600 lines/inch). Made from a ruled cylinder using Merton's method, vacuum-coated with aluminium, from National Physics Laboratory, Teddington, London, c. 1950

Details

Category:
Optics
Object Number:
1952-461
Materials:
glass, aluminium (metal) and gelatin
Measurements:
overall: 77 mm x 103 mm x 14 mm, , .255kg
type:
diffraction grating - reflection
credit:
National Physical Laboratory.