ID: 
2327
Maker's Name: 
Negretti & Zambra
Where made: 
Germany
Dimensions: 
1.2 × 1.2 × 26.2 cm

This hydrometer measures Specific Gravity in the range 1.0 to 1.04 (1000 to 1040). The thermometer has a range 20 to 120F. This suggests the hydrometer was used in water quality studies or with light aqueous solutions.