Hygrometer wicks

Hygrometer wicks by Casella, inside sealed envelope (partially split along one side). Found inside reversing holder box.

Object Details

ID: NAV1763.5
Type: Hygrometer wicks
Display location: Not on display
Creator: Unknown
Date made: Unknown
Credit: Transferred from the Institute of Oceanographic Sciences, Deacon Laboratory
Measurements: Overall: 12 mm x 102 mm x 75 mm
Parts: Reversing holder for a deep sea thermometer