Ellipsoidals Berkey Colortran
5 degree, 10 degree, 30 degree, 40 degree ellipsoidals
Catalogue & Journal Entries for Ellipsoidals in the Backstage Heritage Collection
Back to Lanterns (Named) (Berkey Colortran)
1517
5 degree, 10 degree, 30 degree, 40 degree ellipsoidals