Part of a group of Mark V Heliostats
part of a group of Mark V Heliostats in leather cases, numbered B29069, B56895, B56876 on reverse of mirror mountings, circa 1960
Mark V Heliostats in leather cases, numbered B29069, B56895, B56876 on reverse of mirror mountings, circa 1960
part of a group of Mark V Heliostats in leather cases, numbered B29069, B56895, B56876 on reverse of mirror mountings, circa 1960
part of a group of Mark V Heliostats in leather cases, numbered B29069, B56895, B56876 on reverse of mirror mountings, circa 1960