Sealant tapes for hatch covers on board vessels. Many brands are available either in STRIPS or in ROLLS, their designs and performance vary between brands. Several brands are shown below as a reference.
Consisting of dry and wet alcohol filled glass thermometers fixed on a panel. By differential indication between these thermometers, humidity can be read from the table mounted on a panel. Range -10 to 50 in 1 integrals. Panel size 280 x 80 mm.