Hydrometer, Baume, 0-30, 0.5 divisions, 250mm Long

Hydrometer, Baume, 0-50, 1.0 divisions, 250mm Long
Hydrometer, Baume, 0-70, 1.0 divisions, 305mm Long
Hydrometer, Baume , 0-10, 0.1 divisions, 250mm Long