D20.2_001772 “Diaphot” exposure meter Item Reference: 001772 Category: Photography Format: Artefact Description: “Diaphot” exposure meter; made in Germany by Zeis Ikon, in Leather case. Date: c. 1930 Further Information: Links: D20.2_001772_1 D20.2_001772_2 D20.2_001772_3 D20.2_001772_4 D20.2_001772_5