Heliostat mirror 100cm square with foresight attached to one corner

Made:
1950
Heliostat mirror 100cm square with foresight attached to one

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Heliostat mirror 100cm square with foresight attached to one
Science Museum Group
© The Board of Trustees of the Science Museum

Heliostat mirror 100cm square with foresight attached to one corner and printed instructions on the back, c1950

Details

Category:
Surveying
Object Number:
1983-606
type:
mirrors