Figure 56. Insulated Knudsen bottle designed by the Dane Martin Knudsen in 1921
with the aid of Hans J. Neilsen. It was designed to ameliorate problems with
the Pettersson and Nansen bottle. Left: ascending. Right: ascending.
Image ID: ship4184, Voyage To Inner Space - Exploring the Seas With NOAA Collect Photographer: Y. Berard Credit: Oceanographic Museum of Monaco