Kelner eyepiece (catalogue no.E.91) focal length 6mm

Kelner eyepiece (catalogue no.E

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Kelner eyepiece (catalogue no.E
Science Museum Group
© The Board of Trustees of the Science Museum

Kelner eyepiece (catalogue no.E.91) focal length 6mm, field of view 40 degrees, weight 1oz, bloomed

Details

Category:
Optics
Object Number:
1980-535
type:
eyepiece
credit:
English, H.W.