Figure 3. H. Fol and E. Sarasin photometer, 1885 model. From top to bottom -Device closed; device open; the surface float. This model was designed to fixthe weak point of the preceding model that was not able to execute a solemeasurement at a give
4/4/2019 1:50:11 PM
Photographer: Y. Berard
Credit: Oceanographic Museum of Monaco
Subject: Oceanography
Subject: Historical instruments