Browse Items (28 total) Browse All Browse by Tag Search Items Tags: prism Previous Page Page of 2 Sort by: Title Creator Date Added A right-angle prism with a concave lens on one face 1942 - 1945 A right angled prism produced at the Optical Annexe, Hobart, during World War Two 1942 - 1945 A large piece of fused glass block from the Optical Annexe. These blocks were created to produce lenses and prisms for the war effort A a right-angled pentagonal prism from the World War Two production line at the Optical Munitions Annexe 9/101, Hobart 1942 - 1945 Previous Page Page of 2 Output Formats atom, dcmes-xml, json, omeka-xml, rss2