Figure 61. Nansen magnifying glass for reading thermometers. This magnifying
glass was described in Plate 2, image ship4353. This magnifying glass differed
little from that devised by Richter. This type of glass was commercialized
about 1914.
Image ID: ship4356, Voyage To Inner Space - Exploring the Seas With NOAA Collect Photographer: Y. Berard Credit: Oceanographic Museum of Monaco
